Replace hand-creation of blended transforms in Axes.

dopplershift · dopplershift · commit e4d0f0831e38 · 2014-03-09T21:00:08.000-06:00
By default get_[x|y]axis_transform() do the same, but by calling these
methods instead of creating the transforms by hand, we better support
custom Axes.
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -720,8 +720,7 @@ def axhline(self, y=0, xmin=0, xmax=1, **kwargs):
         yy = self.convert_yunits(y)
         scaley = (yy < ymin) or (yy > ymax)
 
-        trans = mtransforms.blended_transform_factory(
-            self.transAxes, self.transData)
+        trans = self.get_yaxis_transform(which='grid')
         l = mlines.Line2D([xmin, xmax], [y, y], transform=trans, **kwargs)
         self.add_line(l)
         self.autoscale_view(scalex=False, scaley=scaley)
@@ -787,8 +786,7 @@ def axvline(self, x=0, ymin=0, ymax=1, **kwargs):
         xx = self.convert_xunits(x)
         scalex = (xx < xmin) or (xx > xmax)
 
-        trans = mtransforms.blended_transform_factory(
-            self.transData, self.transAxes)
+        trans = self.get_xaxis_transform(which='grid')
         l = mlines.Line2D([x, x], [ymin, ymax], transform=trans, **kwargs)
         self.add_line(l)
         self.autoscale_view(scalex=scalex, scaley=False)
@@ -833,8 +831,7 @@ def axhspan(self, ymin, ymax, xmin=0, xmax=1, **kwargs):
         .. plot:: mpl_examples/pylab_examples/axhspan_demo.py
 
         """
-        trans = mtransforms.blended_transform_factory(
-            self.transAxes, self.transData)
+        trans = self.get_yaxis_transform(which='grid')
 
         # process the unit information
         self._process_unit_info([xmin, xmax], [ymin, ymax], kwargs=kwargs)
@@ -889,8 +886,7 @@ def axvspan(self, xmin, xmax, ymin=0, ymax=1, **kwargs):
             :meth:`axhspan`
                 for example plot and source code
         """
-        trans = mtransforms.blended_transform_factory(
-            self.transData, self.transAxes)
+        trans = self.get_xaxis_transform(which='grid')
 
         # process the unit information
         self._process_unit_info([xmin, xmax], [ymin, ymax], kwargs=kwargs)
@@ -3949,8 +3945,7 @@ def coarse_bin(x, y, coarse):
             values.append(val)
 
         values = np.array(values)
-        trans = mtransforms.blended_transform_factory(
-            self.transData, self.transAxes)
+        trans = self.get_xaxis_transform(which='grid')
 
         hbar = mcoll.PolyCollection(verts, transform=trans, edgecolors='face')
 
@@ -3979,8 +3974,7 @@ def coarse_bin(x, y, coarse):
 
         values = np.array(values)
 
-        trans = mtransforms.blended_transform_factory(
-            self.transAxes, self.transData)
+        trans = self.get_yaxis_transform(which='grid')
 
         vbar = mcoll.PolyCollection(verts, transform=trans, edgecolors='face')
         vbar.set_array(values)
