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<title>What’s new? — sardana 3.1.2-alpha documentation</title>
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<div class="section" id="what-s-new">
<h1>What’s new?<a class="headerlink" href="#what-s-new" title="Permalink to this headline">¶</a></h1>
<p>Below you will find the most relevant news that brings the Sardana releases.
For a complete list of changes consult the Sardana <a class="reference external" href="https://github.com/sardana-org/sardana/blob/develop/CHANGELOG.md">CHANGELOG.md </a> file.</p>
<div class="section" id="what-s-new-in-sardana-3-1-1">
<h2>What’s new in Sardana 3.1.1?<a class="headerlink" href="#what-s-new-in-sardana-3-1-1" title="Permalink to this headline">¶</a></h2>
<p>Date: 2021-06-11</p>
<p>Type: hotfix release</p>
<div class="section" id="fixed">
<h3>Fixed<a class="headerlink" href="#fixed" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p>Correctly handle stop/abort of macros e.g. <code class="docutils literal notranslate"><span class="pre">Ctrl+c</span></code> in Spock in case
the macro was executing another hooked macros e.g. a scan executing a general
hook.</p></li>
</ul>
</div>
</div>
<div class="section" id="what-s-new-in-sardana-3-1">
<h2>What’s new in Sardana 3.1?<a class="headerlink" href="#what-s-new-in-sardana-3-1" title="Permalink to this headline">¶</a></h2>
<p>Date: 2021-05-17 (<em>Jan21</em> milestone)</p>
<p>Type: biannual stable release</p>
<p>It is backwards compatible and comes with new features, changes and bug fixes.</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>This release, in comparison to the previous ones, brings significant
user experience improvements when used on Windows.</p>
</div>
<div class="section" id="added">
<h3>Added<a class="headerlink" href="#added" title="Permalink to this headline">¶</a></h3>
<ul>
<li><p><em>HDF5 write session</em>, in order to avoid the file locking problems and to introduce
the SWMR mode support. It enables safe introspection e.g.: using data
analysis tools like PyMCA or silx, custom scripts, etc. of the scan data files
written in the <a class="reference external" href="https://www.hdfgroup.org/solutions/hdf5/">HDF5 data format</a>
while scanning.
You can control the session using e.g.:
<a class="reference internal" href="devel/api/sardana/macroserver/macros/h5storage.html#sardana.macroserver.macros.h5storage.h5_start_session" title="sardana.macroserver.macros.h5storage.h5_start_session"><code class="xref py py-obj docutils literal notranslate"><span class="pre">h5_start_session</span></code></a> and
<a class="reference internal" href="devel/api/sardana/macroserver/macros/h5storage.html#sardana.macroserver.macros.h5storage.h5_end_session" title="sardana.macroserver.macros.h5storage.h5_end_session"><code class="xref py py-obj docutils literal notranslate"><span class="pre">h5_end_session</span></code></a> macros
or the <a class="reference internal" href="devel/api/sardana/macroserver/macros/h5storage.html#sardana.macroserver.macros.h5storage.h5_write_session" title="sardana.macroserver.macros.h5storage.h5_write_session"><code class="xref py py-obj docutils literal notranslate"><span class="pre">h5_write_session</span></code></a>
context manager.
More information in the <a class="reference internal" href="users/scan.html#sardana-users-scan-data-storage-nxscanh5-filerecorder"><span class="std std-ref">NXscanH5_FileRecorder documentation </span></a></p></li>
<li><p><em>scan information</em> and <em>scan point</em> forms to the <em>showscan online</em> widget.
See example in the <a class="reference internal" href="users/taurus/showscan.html#showscan-online-infopanels-figure"><span class="std std-ref">showscan online screenshot </span></a>.</p></li>
<li><p>Handle <code class="xref py py-obj docutils literal notranslate"><span class="pre">pre-move</span></code> and <code class="xref py py-obj docutils literal notranslate"><span class="pre">post-move</span></code> hooks by: <code class="xref py py-obj docutils literal notranslate"><span class="pre">mv</span></code>, <code class="xref py py-obj docutils literal notranslate"><span class="pre">mvr</span></code>, <code class="xref py py-obj docutils literal notranslate"><span class="pre">umv</span></code>, <code class="xref py py-obj docutils literal notranslate"><span class="pre">umvr</span></code>,
<code class="xref py py-obj docutils literal notranslate"><span class="pre">br</span></code> and <code class="xref py py-obj docutils literal notranslate"><span class="pre">ubr</span></code> macros.
You may use <a class="reference internal" href="users/configuration/sardanacustomsettings.html#sardana.sardanacustomsettings.PRE_POST_MOVE_HOOK_IN_MV" title="sardana.sardanacustomsettings.PRE_POST_MOVE_HOOK_IN_MV"><code class="xref py py-obj docutils literal notranslate"><span class="pre">PRE_POST_MOVE_HOOK_IN_MV</span></code></a>
for disabling these hooks.</p></li>
<li><p>Include trigger/gate (synchronizer) elements in the per-measurement preparation.
This enables possible dead time optimization in hardware synchronized step scans.
More information in the <a class="reference internal" href="devel/howto_controllers/howto_triggergatecontroller.html#sardana-triggergatecontroller-howto-prepare"><span class="std std-ref">How to write a trigger/gate controller documentation </span></a>.</p></li>
<li><p><a class="reference internal" href="users/environment_variable_catalog.html#scanuser"><span class="std std-ref">ScanUser</span></a> environment variable.</p></li>
<li><p>Support to <code class="xref py py-obj docutils literal notranslate"><span class="pre">PosFormat</span></code> <a class="reference internal" href="users/spock.html#sardana-spock-viewoptions"><span class="std std-ref">ViewOption</span></a> in <code class="xref py py-obj docutils literal notranslate"><span class="pre">umv</span></code> macro.</p></li>
<li><p>Avoid double printing of user units in <a class="reference internal" href="users/taurus/poolmotortv.html#pmtv"><span class="std std-ref">PoolMotorTV User’s Interface</span></a>: read widget and
units widget.</p></li>
<li><p>Print of allowed <a class="reference internal" href="users/macro_hooks.html#sardana-macros-hooks"><span class="std std-ref">Macro Hooks</span></a> when <a class="reference internal" href="users/spock.html#sardana-spock-gettinghelp"><span class="std std-ref">Getting help</span></a>
on macros in Spock.</p></li>
<li><p>Documentation:</p>
<blockquote>
<div><ul class="simple">
<li><p><a class="reference internal" href="devel/howto_controllers/howto_1dcontroller.html#sardana-1dcontroller-howto"><span class="std std-ref">How to write a 1D controller</span></a> and <a class="reference internal" href="devel/howto_controllers/howto_2dcontroller.html#sardana-2dcontroller-howto"><span class="std std-ref">How to write a 2D controller</span></a></p></li>
<li><p><a class="reference internal" href="devel/howto_controllers/howto_countertimercontroller.html#sardana-countertimercontroller"><span class="std std-ref">How to write a counter/timer controller</span></a> now contains the <a class="reference external" href="http://www.sardana-controls.org/sep/?SEP18.md">SEP18 </a> concepts.</p></li>
<li><p>Properly <a class="reference internal" href="devel/howto_macros/macros_general.html#sardana-macro-exception-handling"><span class="std std-ref">Handling exceptions</span></a> in macros in order
to not interfere with macro stopping/aborting</p></li>
<li><p><a class="reference internal" href="users/faq.html#faq-how-to-access-tango-from-macros-and-controllers"><span class="std std-ref">How to access Tango from within macros or controllers</span></a></p></li>
<li><p>Update <a class="reference internal" href="users/getting_started/installing.html#sardana-installing"><span class="std std-ref">Installation instructions</span></a></p></li>
</ul>
</div></blockquote>
</li>
</ul>
</div>
<div class="section" id="changed">
<h3>Changed<a class="headerlink" href="#changed" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p>Experimental channel’s shape is now considered as a result of the configuration
e.g. RoI, binning, etc. and not part of the measurement group configuration:</p>
<ul>
<li><p>Added <a class="reference internal" href="devel/howto_controllers/howto_2dcontroller.html#sardana-2dcontroller-general-guide-shape"><span class="std std-ref">shape controller axis parameter (plugin)</span></a>,
<code class="xref py py-obj docutils literal notranslate"><span class="pre">shape</span></code> experimental channel attribute (kernel)
and <code class="xref py py-obj docutils literal notranslate"><span class="pre">Shape</span></code> Tango attribute to the experimental channels</p></li>
<li><p><strong>Removed</strong> the <em>shape</em> column from the measurement group’s configuration panel
in <a class="reference internal" href="users/taurus/experimentconfiguration.html#expconf-ui"><span class="std std-ref">Experiment Configuration user interface</span></a>.</p></li>
</ul>
</li>
</ul>
</div>
<div class="section" id="id1">
<h3>Fixed<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h3>
<ul>
<li><p>Sardana server (standalone) startup is more robust.</p></li>
<li><p>Storing string values in <em>datasets</em>, <em>pre-scan snapshot</em> and <em>custom data</em>
in <a class="reference internal" href="users/scan.html#sardana-users-scan-data-storage-nxscanh5-filerecorder"><span class="std std-ref">NXscanH5_FileRecorder</span></a>.</p></li>
<li><p>Stopping/aborting grouped movement when backlash correction would be applied.</p></li>
<li><p>Randomly swapping target positions in grouped motion when moveables proceed
from various Device Pool’s.</p></li>
<li><p>Enables possible dead time optimization in <code class="xref py py-obj docutils literal notranslate"><span class="pre">mesh</span></code> scan macro by executing
<a class="reference internal" href="devel/howto_macros/scan_framework.html#sardana-macros-scanframework-determscan"><span class="std std-ref">per measurement preparation</span></a>.</p></li>
<li><p>Continuously read experimental channel’s value references in hardware
synchronized acquisition instead of reading only once at the end.</p></li>
<li><p>Problems when <a class="reference internal" href="devel/howto_controllers/howto_controller.html#sardana-controller-howto-change-default-interface"><span class="std std-ref">Changing default interface</span></a> of standard attributes
in controllers e.g. shape of the pseudo counter’s Value attribute.</p></li>
<li><p><a class="reference internal" href="users/taurus/sequencer.html#sequencer-ui"><span class="std std-ref">Sequencer</span></a> related bugs:</p>
<blockquote>
<div><ul class="simple">
<li><p>Fill Macro’s <code class="xref py py-obj docutils literal notranslate"><span class="pre">parent_macro</span></code> in case of executing XML hooks in sequencer</p></li>
<li><p>Problems with macro id’s when executing sequences loaded from <em>plain text</em> files with spock syntax</p></li>
<li><p>Loading of sequences using macro functions from <em>plain text</em> files with spock syntax</p></li>
</ul>
</div></blockquote>
</li>
<li><p>Apply position formatting (configured with <code class="xref py py-obj docutils literal notranslate"><span class="pre">PosFormat</span></code>
<a class="reference internal" href="users/spock.html#sardana-spock-viewoptions"><span class="std std-ref">ViewOption</span></a>) to the limits in the <code class="xref py py-obj docutils literal notranslate"><span class="pre">wm</span></code> macro.</p></li>
</ul>
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