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index 6172e833..641dff0f 100644
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diff --git a/docs/_build/doctrees/params.doctree b/docs/_build/doctrees/params.doctree
index 79692de1..353200b0 100644
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diff --git a/docs/_build/doctrees/patches.doctree b/docs/_build/doctrees/patches.doctree
index f3b8c12b..4aea51c9 100644
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diff --git a/docs/_build/doctrees/scripts.doctree b/docs/_build/doctrees/scripts.doctree
index 5dcfbbc3..f0aa7fda 100644
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diff --git a/docs/_build/html/.buildinfo b/docs/_build/html/.buildinfo
index aa097bf0..cedf02d1 100644
--- a/docs/_build/html/.buildinfo
+++ b/docs/_build/html/.buildinfo
@@ -1,4 +1,4 @@
 # Sphinx build info version 1
 # This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
-config: b93f374825c453a58f53a1871cdce535
+config: 5c0f38c451707d93ea2c43e883269b36
 tags: 645f666f9bcd5a90fca523b33c5a78b7
diff --git a/docs/_build/html/_modules/index.html b/docs/_build/html/_modules/index.html
index 72d0339d..cdbc1653 100644
--- a/docs/_build/html/_modules/index.html
+++ b/docs/_build/html/_modules/index.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Overview: module code &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
+  <title>Overview: module code &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/binnedcorr2.html b/docs/_build/html/_modules/treecorr/binnedcorr2.html
index 8ae82a3b..119b1763 100644
--- a/docs/_build/html/_modules/treecorr/binnedcorr2.html
+++ b/docs/_build/html/_modules/treecorr/binnedcorr2.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.binnedcorr2 &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.binnedcorr2 &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/binnedcorr3.html b/docs/_build/html/_modules/treecorr/binnedcorr3.html
index ad208721..a02a02fb 100644
--- a/docs/_build/html/_modules/treecorr/binnedcorr3.html
+++ b/docs/_build/html/_modules/treecorr/binnedcorr3.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.binnedcorr3 &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.binnedcorr3 &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/catalog.html b/docs/_build/html/_modules/treecorr/catalog.html
index 464627c9..cca9d13c 100644
--- a/docs/_build/html/_modules/treecorr/catalog.html
+++ b/docs/_build/html/_modules/treecorr/catalog.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.catalog &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.catalog &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
@@ -757,6 +758,10 @@ <h1>Source code for treecorr.catalog</h1><div class="highlight"><pre>
             <span class="bp">self</span><span class="o">.</span><span class="n">_patch</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">makeArray</span><span class="p">(</span><span class="n">patch</span><span class="p">,</span><span class="s1">&#39;patch&#39;</span><span class="p">,</span><span class="nb">int</span><span class="p">)</span>
             <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_patch</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
                 <span class="bp">self</span><span class="o">.</span><span class="n">_set_npatch</span><span class="p">()</span>
+            <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_x</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
+                <span class="bp">self</span><span class="o">.</span><span class="n">_apply_xyz_units</span><span class="p">()</span>
+            <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_ra</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
+                <span class="bp">self</span><span class="o">.</span><span class="n">_apply_radec_units</span><span class="p">()</span>
 
             <span class="c1"># Check that all columns have the same length.  (This is impossible in file input)</span>
             <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_x</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
@@ -1035,9 +1040,6 @@ <h1>Source code for treecorr.catalog</h1><div class="highlight"><pre>
         <span class="bp">self</span><span class="o">.</span><span class="n">checkForNaN</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_w</span><span class="p">,</span><span class="s1">&#39;w&#39;</span><span class="p">)</span>
         <span class="bp">self</span><span class="o">.</span><span class="n">checkForNaN</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_wpos</span><span class="p">,</span><span class="s1">&#39;wpos&#39;</span><span class="p">)</span>
 
-        <span class="c1"># Apply units as appropriate</span>
-        <span class="bp">self</span><span class="o">.</span><span class="n">_apply_units</span><span class="p">()</span>
-
         <span class="c1"># If using ra/dec, generate x,y,z</span>
         <span class="c1"># Note: This also makes self.ntot work properly.</span>
         <span class="bp">self</span><span class="o">.</span><span class="n">_generate_xyz</span><span class="p">()</span>
@@ -1139,18 +1141,17 @@ <h1>Source code for treecorr.catalog</h1><div class="highlight"><pre>
             <span class="n">use</span> <span class="o">=</span> <span class="nb">slice</span><span class="p">(</span><span class="kc">None</span><span class="p">)</span>  <span class="c1"># Which ironically means use all. :)</span>
         <span class="k">return</span> <span class="n">use</span>
 
-    <span class="k">def</span> <span class="nf">_apply_units</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
-        <span class="c1"># Apply units to x,y,ra,dec</span>
-        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_ra</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
-            <span class="bp">self</span><span class="o">.</span><span class="n">ra_units</span> <span class="o">=</span> <span class="n">get_from_list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">config</span><span class="p">,</span><span class="s1">&#39;ra_units&#39;</span><span class="p">,</span><span class="bp">self</span><span class="o">.</span><span class="n">_num</span><span class="p">)</span>
-            <span class="bp">self</span><span class="o">.</span><span class="n">dec_units</span> <span class="o">=</span> <span class="n">get_from_list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">config</span><span class="p">,</span><span class="s1">&#39;dec_units&#39;</span><span class="p">,</span><span class="bp">self</span><span class="o">.</span><span class="n">_num</span><span class="p">)</span>
-            <span class="bp">self</span><span class="o">.</span><span class="n">_ra</span> <span class="o">*=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ra_units</span>
-            <span class="bp">self</span><span class="o">.</span><span class="n">_dec</span> <span class="o">*=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dec_units</span>
-        <span class="k">else</span><span class="p">:</span>
-            <span class="bp">self</span><span class="o">.</span><span class="n">x_units</span> <span class="o">=</span> <span class="n">get_from_list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">config</span><span class="p">,</span><span class="s1">&#39;x_units&#39;</span><span class="p">,</span><span class="bp">self</span><span class="o">.</span><span class="n">_num</span><span class="p">,</span><span class="nb">str</span><span class="p">,</span> <span class="s1">&#39;radians&#39;</span><span class="p">)</span>
-            <span class="bp">self</span><span class="o">.</span><span class="n">y_units</span> <span class="o">=</span> <span class="n">get_from_list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">config</span><span class="p">,</span><span class="s1">&#39;y_units&#39;</span><span class="p">,</span><span class="bp">self</span><span class="o">.</span><span class="n">_num</span><span class="p">,</span><span class="nb">str</span><span class="p">,</span> <span class="s1">&#39;radians&#39;</span><span class="p">)</span>
-            <span class="bp">self</span><span class="o">.</span><span class="n">_x</span> <span class="o">*=</span> <span class="bp">self</span><span class="o">.</span><span class="n">x_units</span>
-            <span class="bp">self</span><span class="o">.</span><span class="n">_y</span> <span class="o">*=</span> <span class="bp">self</span><span class="o">.</span><span class="n">y_units</span>
+    <span class="k">def</span> <span class="nf">_apply_radec_units</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">ra_units</span> <span class="o">=</span> <span class="n">get_from_list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">config</span><span class="p">,</span><span class="s1">&#39;ra_units&#39;</span><span class="p">,</span><span class="bp">self</span><span class="o">.</span><span class="n">_num</span><span class="p">)</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">dec_units</span> <span class="o">=</span> <span class="n">get_from_list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">config</span><span class="p">,</span><span class="s1">&#39;dec_units&#39;</span><span class="p">,</span><span class="bp">self</span><span class="o">.</span><span class="n">_num</span><span class="p">)</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">_ra</span> <span class="o">*=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ra_units</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">_dec</span> <span class="o">*=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dec_units</span>
+
+    <span class="k">def</span> <span class="nf">_apply_xyz_units</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">x_units</span> <span class="o">=</span> <span class="n">get_from_list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">config</span><span class="p">,</span><span class="s1">&#39;x_units&#39;</span><span class="p">,</span><span class="bp">self</span><span class="o">.</span><span class="n">_num</span><span class="p">,</span><span class="nb">str</span><span class="p">,</span> <span class="s1">&#39;radians&#39;</span><span class="p">)</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">y_units</span> <span class="o">=</span> <span class="n">get_from_list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">config</span><span class="p">,</span><span class="s1">&#39;y_units&#39;</span><span class="p">,</span><span class="bp">self</span><span class="o">.</span><span class="n">_num</span><span class="p">,</span><span class="nb">str</span><span class="p">,</span> <span class="s1">&#39;radians&#39;</span><span class="p">)</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">_x</span> <span class="o">*=</span> <span class="bp">self</span><span class="o">.</span><span class="n">x_units</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">_y</span> <span class="o">*=</span> <span class="bp">self</span><span class="o">.</span><span class="n">y_units</span>
 
     <span class="k">def</span> <span class="nf">_generate_xyz</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_x</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
@@ -1390,6 +1391,7 @@ <h1>Source code for treecorr.catalog</h1><div class="highlight"><pre>
                 <span class="k">if</span> <span class="n">z_col</span> <span class="o">!=</span> <span class="s1">&#39;0&#39;</span><span class="p">:</span>
                     <span class="bp">self</span><span class="o">.</span><span class="n">_z</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="n">z_col</span><span class="p">]</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="nb">float</span><span class="p">)</span>
                     <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s1">&#39;read z&#39;</span><span class="p">)</span>
+                <span class="bp">self</span><span class="o">.</span><span class="n">_apply_xyz_units</span><span class="p">()</span>
             <span class="k">if</span> <span class="n">ra_col</span> <span class="o">!=</span> <span class="s1">&#39;0&#39;</span> <span class="ow">and</span> <span class="n">ra_col</span> <span class="ow">in</span> <span class="n">data</span><span class="p">:</span>
                 <span class="bp">self</span><span class="o">.</span><span class="n">_ra</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="n">ra_col</span><span class="p">]</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="nb">float</span><span class="p">)</span>
                 <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s1">&#39;read ra&#39;</span><span class="p">)</span>
@@ -1398,6 +1400,7 @@ <h1>Source code for treecorr.catalog</h1><div class="highlight"><pre>
                 <span class="k">if</span> <span class="n">r_col</span> <span class="o">!=</span> <span class="s1">&#39;0&#39;</span><span class="p">:</span>
                     <span class="bp">self</span><span class="o">.</span><span class="n">_r</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="n">r_col</span><span class="p">]</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="nb">float</span><span class="p">)</span>
                     <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s1">&#39;read r&#39;</span><span class="p">)</span>
+                <span class="bp">self</span><span class="o">.</span><span class="n">_apply_radec_units</span><span class="p">()</span>
 
         <span class="k">def</span> <span class="nf">set_patch</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="n">patch_col</span><span class="p">):</span>
             <span class="k">if</span> <span class="n">patch_col</span> <span class="o">!=</span> <span class="s1">&#39;0&#39;</span> <span class="ow">and</span> <span class="n">patch_col</span> <span class="ow">in</span> <span class="n">data</span><span class="p">:</span>
@@ -1499,6 +1502,7 @@ <h1>Source code for treecorr.catalog</h1><div class="highlight"><pre>
                         <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">use_cols1</span><span class="p">:</span>
                             <span class="n">data</span><span class="p">[</span><span class="n">c</span><span class="p">]</span> <span class="o">=</span> <span class="n">data1</span><span class="p">[</span><span class="n">c</span><span class="p">]</span>
                     <span class="n">set_pos</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="n">x_col</span><span class="p">,</span> <span class="n">y_col</span><span class="p">,</span> <span class="n">z_col</span><span class="p">,</span> <span class="n">ra_col</span><span class="p">,</span> <span class="n">dec_col</span><span class="p">,</span> <span class="n">r_col</span><span class="p">)</span>
+                    <span class="n">x_col</span> <span class="o">=</span> <span class="n">y_col</span> <span class="o">=</span> <span class="n">z_col</span> <span class="o">=</span> <span class="n">ra_col</span> <span class="o">=</span> <span class="n">dec_col</span> <span class="o">=</span> <span class="n">r_col</span> <span class="o">=</span> <span class="s1">&#39;0&#39;</span>
                 <span class="n">use</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_patch_index</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_single_patch</span><span class="p">)</span>
                 <span class="bp">self</span><span class="o">.</span><span class="n">select</span><span class="p">(</span><span class="n">use</span><span class="p">)</span>
                 <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">s</span><span class="p">,</span><span class="n">np</span><span class="o">.</span><span class="n">ndarray</span><span class="p">):</span>
@@ -2062,7 +2066,10 @@ <h1>Source code for treecorr.catalog</h1><div class="highlight"><pre>
         <span class="n">file_names</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_patch_file_names</span><span class="p">(</span><span class="n">save_patch_dir</span><span class="p">)</span>
         <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">p</span><span class="p">,</span> <span class="n">file_name</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="nb">range</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">npatch</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">patches</span><span class="p">,</span> <span class="n">file_names</span><span class="p">):</span>
             <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">&#39;Writing patch </span><span class="si">%d</span><span class="s1"> to </span><span class="si">%s</span><span class="s1">&#39;</span><span class="p">,</span><span class="n">i</span><span class="p">,</span><span class="n">file_name</span><span class="p">)</span>
-            <span class="n">cols</span> <span class="o">=</span> <span class="n">p</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">file_name</span><span class="p">)</span></div>
+            <span class="k">if</span> <span class="n">p</span><span class="o">.</span><span class="n">ra</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
+                <span class="c1"># Don&#39;t multiply and divide by the units on round trip.</span>
+                <span class="n">p</span><span class="o">.</span><span class="n">ra_units</span> <span class="o">=</span> <span class="n">p</span><span class="o">.</span><span class="n">dec_units</span> <span class="o">=</span> <span class="mi">1</span>
+            <span class="n">p</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">file_name</span><span class="p">)</span></div>
 
 <div class="viewcode-block" id="Catalog.read_patches"><a class="viewcode-back" href="../../catalog.html#treecorr.Catalog.read_patches">[docs]</a>    <span class="k">def</span> <span class="nf">read_patches</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">save_patch_dir</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
         <span class="sd">&quot;&quot;&quot;Read the patches from files on disk.</span>
diff --git a/docs/_build/html/_modules/treecorr/config.html b/docs/_build/html/_modules/treecorr/config.html
index 20d221ad..c1f219eb 100644
--- a/docs/_build/html/_modules/treecorr/config.html
+++ b/docs/_build/html/_modules/treecorr/config.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.config &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.config &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/corr2.html b/docs/_build/html/_modules/treecorr/corr2.html
index 90c38616..715d1a2c 100644
--- a/docs/_build/html/_modules/treecorr/corr2.html
+++ b/docs/_build/html/_modules/treecorr/corr2.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.corr2 &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.corr2 &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/corr3.html b/docs/_build/html/_modules/treecorr/corr3.html
index 435a8f25..bd428838 100644
--- a/docs/_build/html/_modules/treecorr/corr3.html
+++ b/docs/_build/html/_modules/treecorr/corr3.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.corr3 &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.corr3 &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/field.html b/docs/_build/html/_modules/treecorr/field.html
index d3a36d98..678a24ac 100644
--- a/docs/_build/html/_modules/treecorr/field.html
+++ b/docs/_build/html/_modules/treecorr/field.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.field &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.field &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/ggcorrelation.html b/docs/_build/html/_modules/treecorr/ggcorrelation.html
index 1cd88037..1a51f3f7 100644
--- a/docs/_build/html/_modules/treecorr/ggcorrelation.html
+++ b/docs/_build/html/_modules/treecorr/ggcorrelation.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.ggcorrelation &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.ggcorrelation &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/gggcorrelation.html b/docs/_build/html/_modules/treecorr/gggcorrelation.html
index de4dbc73..a11a5ad2 100644
--- a/docs/_build/html/_modules/treecorr/gggcorrelation.html
+++ b/docs/_build/html/_modules/treecorr/gggcorrelation.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.gggcorrelation &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.gggcorrelation &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/kgcorrelation.html b/docs/_build/html/_modules/treecorr/kgcorrelation.html
index 66befbd5..f433acb2 100644
--- a/docs/_build/html/_modules/treecorr/kgcorrelation.html
+++ b/docs/_build/html/_modules/treecorr/kgcorrelation.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.kgcorrelation &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.kgcorrelation &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/kkcorrelation.html b/docs/_build/html/_modules/treecorr/kkcorrelation.html
index 9cc5020d..2a9aa079 100644
--- a/docs/_build/html/_modules/treecorr/kkcorrelation.html
+++ b/docs/_build/html/_modules/treecorr/kkcorrelation.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.kkcorrelation &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.kkcorrelation &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/kkkcorrelation.html b/docs/_build/html/_modules/treecorr/kkkcorrelation.html
index eca38bfc..6ff649fd 100644
--- a/docs/_build/html/_modules/treecorr/kkkcorrelation.html
+++ b/docs/_build/html/_modules/treecorr/kkkcorrelation.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.kkkcorrelation &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.kkkcorrelation &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/ngcorrelation.html b/docs/_build/html/_modules/treecorr/ngcorrelation.html
index b2d42c31..be8bb101 100644
--- a/docs/_build/html/_modules/treecorr/ngcorrelation.html
+++ b/docs/_build/html/_modules/treecorr/ngcorrelation.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.ngcorrelation &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.ngcorrelation &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/nkcorrelation.html b/docs/_build/html/_modules/treecorr/nkcorrelation.html
index eea8402a..6e6b0850 100644
--- a/docs/_build/html/_modules/treecorr/nkcorrelation.html
+++ b/docs/_build/html/_modules/treecorr/nkcorrelation.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.nkcorrelation &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.nkcorrelation &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/nncorrelation.html b/docs/_build/html/_modules/treecorr/nncorrelation.html
index e971ac17..004d835b 100644
--- a/docs/_build/html/_modules/treecorr/nncorrelation.html
+++ b/docs/_build/html/_modules/treecorr/nncorrelation.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.nncorrelation &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.nncorrelation &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/nnncorrelation.html b/docs/_build/html/_modules/treecorr/nnncorrelation.html
index c100f788..2778074f 100644
--- a/docs/_build/html/_modules/treecorr/nnncorrelation.html
+++ b/docs/_build/html/_modules/treecorr/nnncorrelation.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.nnncorrelation &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.nnncorrelation &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_modules/treecorr/reader.html b/docs/_build/html/_modules/treecorr/reader.html
index b3e8fcc6..ccf61891 100644
--- a/docs/_build/html/_modules/treecorr/reader.html
+++ b/docs/_build/html/_modules/treecorr/reader.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>treecorr.reader &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
+  <title>treecorr.reader &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="../../_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="../../history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/_static/documentation_options.js b/docs/_build/html/_static/documentation_options.js
index bb350979..fc3258c1 100644
--- a/docs/_build/html/_static/documentation_options.js
+++ b/docs/_build/html/_static/documentation_options.js
@@ -1,6 +1,6 @@
 var DOCUMENTATION_OPTIONS = {
     URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'),
-    VERSION: '4.2.8',
+    VERSION: '4.2.9',
     LANGUAGE: 'None',
     COLLAPSE_INDEX: false,
     BUILDER: 'html',
diff --git a/docs/_build/html/binning.html b/docs/_build/html/binning.html
index d545c315..37d45de3 100644
--- a/docs/_build/html/binning.html
+++ b/docs/_build/html/binning.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Binning &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Binning &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -70,6 +70,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/catalog.html b/docs/_build/html/catalog.html
index d4f32d0b..bfd78427 100644
--- a/docs/_build/html/catalog.html
+++ b/docs/_build/html/catalog.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Input Data &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Input Data &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -64,6 +64,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/changes.html b/docs/_build/html/changes.html
index 3382bb56..bafaf69f 100644
--- a/docs/_build/html/changes.html
+++ b/docs/_build/html/changes.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Changes from version 4.1 to 4.2 &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Changes from version 4.1 to 4.2 &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -64,6 +64,7 @@
 <li class="toctree-l1"><a class="reference internal" href="#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
@@ -234,6 +235,13 @@ <h1>Changes from version 4.2.7 to 4.2.8<a class="headerlink" href="#changes-from
 <li><p>Fixed a bug in the calculation of jackknife and sample variance when only the second
 catalog in a cross-correlation uses patches.</p></li>
 </ul>
+</div>
+<div class="section" id="changes-from-version-4-2-8-to-4-2-9">
+<h1>Changes from version 4.2.8 to 4.2.9<a class="headerlink" href="#changes-from-version-4-2-8-to-4-2-9" title="Permalink to this headline">¶</a></h1>
+<ul class="simple">
+<li><p>Fixed a error in the low_mem calculation when ra_units and/or dec_units are not
+radians. Thanks to Chun-Hao To for the bug report. (#144)</p></li>
+</ul>
 </div>
 
 
diff --git a/docs/_build/html/correlation2.html b/docs/_build/html/correlation2.html
index 6fee37e0..a4083d3d 100644
--- a/docs/_build/html/correlation2.html
+++ b/docs/_build/html/correlation2.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Two-point Correlation Functions &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Two-point Correlation Functions &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -67,6 +67,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/correlation3.html b/docs/_build/html/correlation3.html
index 6fb93052..a33da1b8 100644
--- a/docs/_build/html/correlation3.html
+++ b/docs/_build/html/correlation3.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Three-point Correlation Functions &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Three-point Correlation Functions &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -64,6 +64,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/cov.html b/docs/_build/html/cov.html
index ec5ef12b..60058314 100644
--- a/docs/_build/html/cov.html
+++ b/docs/_build/html/cov.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Covariance Estimates &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Covariance Estimates &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -72,6 +72,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/field.html b/docs/_build/html/field.html
index e8d106dc..12098543 100644
--- a/docs/_build/html/field.html
+++ b/docs/_build/html/field.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Fields &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Fields &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -59,6 +59,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/genindex.html b/docs/_build/html/genindex.html
index ad26f21b..217cb9c7 100644
--- a/docs/_build/html/genindex.html
+++ b/docs/_build/html/genindex.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Index &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Index &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -56,6 +56,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/gg.html b/docs/_build/html/gg.html
index 46279e21..6d423231 100644
--- a/docs/_build/html/gg.html
+++ b/docs/_build/html/gg.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>GGCorrelation: Shear-shear correlations &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>GGCorrelation: Shear-shear correlations &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -67,6 +67,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/ggg.html b/docs/_build/html/ggg.html
index 5390cd68..c68cbfe8 100644
--- a/docs/_build/html/ggg.html
+++ b/docs/_build/html/ggg.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>GGGCorrelation: Shear-shear-shear correlations &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>GGGCorrelation: Shear-shear-shear correlations &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -64,6 +64,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/guide.html b/docs/_build/html/guide.html
index da694aed..f5e9c499 100644
--- a/docs/_build/html/guide.html
+++ b/docs/_build/html/guide.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Getting Started Guide &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Getting Started Guide &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -70,6 +70,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/history.html b/docs/_build/html/history.html
index 825ff65d..4bff4f3f 100644
--- a/docs/_build/html/history.html
+++ b/docs/_build/html/history.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Previous History &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Previous History &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -57,6 +57,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1 current"><a class="current reference internal" href="#">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/index.html b/docs/_build/html/index.html
index 44026b3f..a365090f 100644
--- a/docs/_build/html/index.html
+++ b/docs/_build/html/index.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>TreeCorr Documentation &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>TreeCorr Documentation &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -57,6 +57,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
@@ -216,6 +217,7 @@ <h1>TreeCorr Documentation<a class="headerlink" href="#treecorr-documentation" t
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 </div>
diff --git a/docs/_build/html/kg.html b/docs/_build/html/kg.html
index 06d91986..1c0fc25a 100644
--- a/docs/_build/html/kg.html
+++ b/docs/_build/html/kg.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>KGCorrelation: Kappa-shear correlations &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>KGCorrelation: Kappa-shear correlations &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -67,6 +67,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/kk.html b/docs/_build/html/kk.html
index b1a9b1fe..535cc019 100644
--- a/docs/_build/html/kk.html
+++ b/docs/_build/html/kk.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>KKCorrelation: Kappa-kappa correlations &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>KKCorrelation: Kappa-kappa correlations &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -67,6 +67,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/kkk.html b/docs/_build/html/kkk.html
index 826e5eb6..5dcb91b6 100644
--- a/docs/_build/html/kkk.html
+++ b/docs/_build/html/kkk.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>KKKCorrelation: Kappa-kappa-kappa correlations &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>KKKCorrelation: Kappa-kappa-kappa correlations &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -64,6 +64,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/metric.html b/docs/_build/html/metric.html
index 974d4d74..7b7c90fd 100644
--- a/docs/_build/html/metric.html
+++ b/docs/_build/html/metric.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Metrics &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Metrics &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -68,6 +68,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/ng.html b/docs/_build/html/ng.html
index 82ead08d..8d8abab8 100644
--- a/docs/_build/html/ng.html
+++ b/docs/_build/html/ng.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>NGCorrelation: Count-shear correlations &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>NGCorrelation: Count-shear correlations &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -67,6 +67,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/nk.html b/docs/_build/html/nk.html
index 14866faf..d18ae164 100644
--- a/docs/_build/html/nk.html
+++ b/docs/_build/html/nk.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>NKCorrelation: Count-kappa correlations &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>NKCorrelation: Count-kappa correlations &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -67,6 +67,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/nn.html b/docs/_build/html/nn.html
index 12a74a26..055b7913 100644
--- a/docs/_build/html/nn.html
+++ b/docs/_build/html/nn.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>NNCorrelation: Count-count correlations &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>NNCorrelation: Count-count correlations &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -67,6 +67,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/nnn.html b/docs/_build/html/nnn.html
index 75e9c79b..22d8ea8d 100644
--- a/docs/_build/html/nnn.html
+++ b/docs/_build/html/nnn.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>NNNCorrelation: Count-count-count correlations &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>NNNCorrelation: Count-count-count correlations &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -64,6 +64,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/objects.inv b/docs/_build/html/objects.inv
index f3023426..a8541075 100644
Binary files a/docs/_build/html/objects.inv and b/docs/_build/html/objects.inv differ
diff --git a/docs/_build/html/overview.html b/docs/_build/html/overview.html
index 2134f34c..58586a9c 100644
--- a/docs/_build/html/overview.html
+++ b/docs/_build/html/overview.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Overview &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Overview &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -73,6 +73,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/params.html b/docs/_build/html/params.html
index 5b316e49..36edeec8 100644
--- a/docs/_build/html/params.html
+++ b/docs/_build/html/params.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Configuration Parameters &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Configuration Parameters &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -76,6 +76,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/patches.html b/docs/_build/html/patches.html
index 6a8915b6..dc1463e3 100644
--- a/docs/_build/html/patches.html
+++ b/docs/_build/html/patches.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Patches &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Patches &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -66,6 +66,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
@@ -398,7 +399,7 @@ <h2>Using MPI<a class="headerlink" href="#using-mpi" title="Permalink to this he
 and TreeCorr will divide up the work among however many nodes you are using.
 The results will be sent back the the rank 0 node and combined to produce the
 complete answer:</p>
-<div class="highlight-python notranslate"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal"> 1</span>
+<div class="highlight-python notranslate"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal"> 1</span>
 <span class="normal"> 2</span>
 <span class="normal"> 3</span>
 <span class="normal"> 4</span>
@@ -421,7 +422,7 @@ <h2>Using MPI<a class="headerlink" href="#using-mpi" title="Permalink to this he
 <span class="normal">21</span>
 <span class="normal">22</span>
 <span class="normal">23</span>
-<span class="normal">24</span></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span class="c1"># File name: run_with_mpi.py</span>
+<span class="normal">24</span></pre></div></td><td class="code"><div><pre><span></span><span class="c1"># File name: run_with_mpi.py</span>
 <span class="kn">from</span> <span class="nn">mpi4py</span> <span class="kn">import</span> <span class="n">MPI</span>
 <span class="n">comm</span> <span class="o">=</span> <span class="n">MPI</span><span class="o">.</span><span class="n">COMM_WORLD</span>
 <span class="n">rank</span> <span class="o">=</span> <span class="n">comm</span><span class="o">.</span><span class="n">Get_rank</span><span class="p">()</span>
@@ -445,8 +446,8 @@ <h2>Using MPI<a class="headerlink" href="#using-mpi" title="Permalink to this he
 <span class="k">if</span> <span class="n">rank</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
     <span class="c1"># Probably do something more interesting with this now...</span>
     <span class="nb">print</span><span class="p">(</span><span class="s1">&#39;xip = &#39;</span><span class="p">,</span><span class="n">gg</span><span class="o">.</span><span class="n">xip</span><span class="p">)</span>
-</pre></div>
-</td></tr></table></div>
+</pre></div></td></tr></table></div>
+</div>
 <p>You would then run this script using (e.g. with 4 processes):</p>
 <div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ mpiexec -n 4 python run_with_mpi.py
 </pre></div>
diff --git a/docs/_build/html/py-modindex.html b/docs/_build/html/py-modindex.html
index 6ffd7c3e..779f76c8 100644
--- a/docs/_build/html/py-modindex.html
+++ b/docs/_build/html/py-modindex.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Python Module Index &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Python Module Index &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -59,6 +59,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/scripts.html b/docs/_build/html/scripts.html
index 751f5cee..bb0a62ec 100644
--- a/docs/_build/html/scripts.html
+++ b/docs/_build/html/scripts.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Using configuration files &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Using configuration files &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
   <!--[if lt IE 9]>
     <script src="_static/js/html5shiv.min.js"></script>
@@ -68,6 +68,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/search.html b/docs/_build/html/search.html
index dada7091..69f4bda6 100644
--- a/docs/_build/html/search.html
+++ b/docs/_build/html/search.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Search &mdash; TreeCorr 4.2.8 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <title>Search &mdash; TreeCorr 4.2.9 documentation</title><link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
     <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
     
   <!--[if lt IE 9]>
@@ -59,6 +59,7 @@
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-5-to-4-2-6">Changes from version 4.2.5 to 4.2.6</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-6-to-4-2-7">Changes from version 4.2.6 to 4.2.7</a></li>
 <li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-7-to-4-2-8">Changes from version 4.2.7 to 4.2.8</a></li>
+<li class="toctree-l1"><a class="reference internal" href="changes.html#changes-from-version-4-2-8-to-4-2-9">Changes from version 4.2.8 to 4.2.9</a></li>
 <li class="toctree-l1"><a class="reference internal" href="history.html">Previous History</a></li>
 </ul>
 
diff --git a/docs/_build/html/searchindex.js b/docs/_build/html/searchindex.js
index c0ceeeaa..6980aed5 100644
--- a/docs/_build/html/searchindex.js
+++ b/docs/_build/html/searchindex.js
@@ -1 +1 @@
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