Merge pull request #20 from scikit-hep/bins_field

adding new fields bins and allbins, to complement values and allvalues

uproot_methods/classes/TH1.py

@@ -72,6 +72,39 @@ def underflows(self):
     def overflows(self):
         return self[-1]
 
+    @property
+    def edges(self):
+        axis = self._fXaxis
+        if len(getattr(axis, "_fXbins", [])) > 0:
+            return numpy.array(axis._fXbins)
+        else:
+            return numpy.linspace(axis._fXmin, axis._fXmax, axis._fNbins + 1)
+
+    @property
+    def alledges(self):
+        axis = self._fXaxis
+        v = numpy.empty(axis._fNbins + 3)
+        v[0] = -numpy.inf
+        v[-1] = numpy.inf
+        v[1:-1] = self.edges
+        return v
+
+    @property
+    def bins(self):
+        edges = self.edges
+        out = numpy.empty((len(edges) - 1, 2))
+        out[:, 0] = edges[:-1]
+        out[:, 1] = edges[1:]
+        return out
+
+    @property
+    def allbins(self):
+        edges = self.alledges
+        out = numpy.empty((len(edges) - 1, 2))
+        out[:, 0] = edges[:-1]
+        out[:, 1] = edges[1:]
+        return out
+
     @property
     def values(self):
         return numpy.array(self[1:-1])