Merge pull request #1111 from pelson/transoffset_fix

Fixed transoffset example from failing.

lib/matplotlib/figure.py

@@ -17,7 +17,7 @@
 import artist
 from artist import Artist, allow_rasterization
 from axes import Axes, SubplotBase, subplot_class_factory
-from cbook import flatten, allequal, Stack, iterable, is_string_like
+from cbook import allequal, Stack, iterable
 from matplotlib import _image
 import colorbar as cbar
 from image import FigureImage
@@ -27,15 +27,14 @@
 
 from legend import Legend
 from transforms import Affine2D, Bbox, BboxTransformTo, TransformedBbox
-from projections import get_projection_names, get_projection_class, \
-        process_projection_requirements
+from projections import get_projection_names, process_projection_requirements
 from matplotlib.blocking_input import BlockingMouseInput, BlockingKeyMouseInput
 
 import matplotlib.cbook as cbook
 from matplotlib import docstring
 
 from operator import itemgetter
-import os.path
+
 
 docstring.interpd.update(projection_names = get_projection_names())
 
@@ -110,7 +109,8 @@ def add(self, key, a):
         a_existing = self.get(key)
         if a_existing is not None:
             Stack.remove(self, (key, a_existing))
-            warnings.Warn(
+            import warnings
+            warnings.warn(
                     "key %s already existed; Axes is being replaced" % key)
             # I don't think the above should ever happen.
 
@@ -138,6 +138,7 @@ def __call__(self):
     def __contains__(self, a):
         return a in self.as_list()
 
+
 class SubplotParams:
     """
     A class to hold the parameters for a subplot
@@ -212,8 +213,6 @@ def reset():
                 reset()
                 raise ValueError('bottom cannot be >= top')
 
-
-
     def _update_this(self, s, val):
         if val is None:
             val = getattr(self, s, None)
@@ -223,6 +222,7 @@ def _update_this(self, s, val):
 
         setattr(self, s, val)
 
+
 class Figure(Artist):
 
     """
@@ -1081,13 +1081,9 @@ def gca(self, **kwargs):
         The following kwargs are supported for ensuring the returned axes
         adheres to the given projection etc., and for axes creation if
         the active axes does not exist:
+        
         %(Axes)s
 
-        .. note::
-            When specifying kwargs to ``gca`` to find the pre-created active
-            axes, they should be equivalent in every way to the kwargs which
-            were used in its creation.
-
         """
         ckey, cax = self._axstack.current_key_axes()
         # if there exists an axes on the stack see if it maches
@@ -1107,12 +1103,18 @@ def gca(self, **kwargs):
                 kwargs_copy = kwargs.copy()
                 projection_class, _, key = \
                         process_projection_requirements(self, **kwargs_copy)
+
+                # let the returned axes have any gridspec by removing it from the key
+                ckey = ckey[1:]
+                key = key[1:]
+
                 # if the cax matches this key then return the axes, otherwise
                 # continue and a new axes will be created
                 if key == ckey and isinstance(cax, projection_class):
                     return cax
-
-        return self.add_subplot(111, **kwargs)
+
+        # no axes found, so create one which spans the figure
+        return self.add_subplot(1, 1, 1, **kwargs)
 
     def sca(self, a):
         'Set the current axes to be a and return a'
@@ -1395,7 +1397,6 @@ def tight_layout(self, renderer=None, pad=1.08, h_pad=None, w_pad=None, rect=Non
         self.subplots_adjust(**kwargs)
 
 
-
 def figaspect(arg):
     """
     Create a figure with specified aspect ratio.  If *arg* is a number,

lib/matplotlib/pyplot.py

@@ -2087,12 +2087,8 @@ def polar(*args, **kwargs):
     Multiple *theta*, *r* arguments are supported, with format
     strings, as in :func:`~matplotlib.pyplot.plot`.
 
-    An optional kwarg *resolution* sets the number of vertices to
-    interpolate between each pair of points.  The default is 1,
-    which disables interpolation.
     """
-    resolution = kwargs.pop('resolution', 1)
-    ax = gca(polar=True, resolution=resolution)
+    ax = gca(polar=True)
     ret = ax.plot(*args, **kwargs)
     draw_if_interactive()
     return ret

lib/matplotlib/tests/test_axes.py

@@ -1,7 +1,7 @@
 import numpy as np
 from numpy import ma
 import matplotlib
-from matplotlib.testing.decorators import image_comparison, knownfailureif
+from matplotlib.testing.decorators import image_comparison, cleanup
 import matplotlib.pyplot as plt
 
 
@@ -733,6 +733,7 @@ def test_scatter_plot():
     ax = plt.axes()
     ax.scatter([3, 4, 2, 6], [2, 5, 2, 3], c=['r', 'y', 'b', 'lime'], s=[24, 15, 19, 29])
 
+@cleanup
 def test_as_mpl_axes_api():
     # tests the _as_mpl_axes api
     from matplotlib.projections.polar import PolarAxes
@@ -755,9 +756,7 @@ def _as_mpl_axes(self):
     assert type(ax) == PolarAxes, \
            'Expected a PolarAxes, got %s' % type(ax)
     ax_via_gca = plt.gca(projection=prj)
-    # ideally, ax_via_gca is ax should be true. However, gca isn't
-    # plummed like that. (even with projection='polar').
-    assert ax_via_gca is not ax
+    assert ax_via_gca is ax
     plt.close()
 
     # testing axes creation with gca

lib/matplotlib/tests/test_figure.py

@@ -1,6 +1,6 @@
 import matplotlib
-from nose.tools import assert_equal
-from matplotlib.testing.decorators import image_comparison, knownfailureif, cleanup
+from nose.tools import assert_equal, assert_is, assert_is_not
+from matplotlib.testing.decorators import image_comparison, cleanup
 import matplotlib.pyplot as plt
 
 
@@ -38,3 +38,30 @@ def test_figure():
     # Return to the original; make sure the red line is not there.
     plt.figure('today')
     plt.close('tomorrow')
+
+
+#@cleanup
+def test_gca():
+    fig = plt.figure()
+
+    ax1 = fig.add_axes([0, 0, 1, 1])
+    assert_is(fig.gca(projection='rectilinear'), ax1)
+    assert_is(fig.gca(), ax1)
+
+    ax2 = fig.add_subplot(121, projection='polar')
+    assert_is(fig.gca(), ax2)
+    assert_is(fig.gca(polar=True), ax2)
+
+    ax3 = fig.add_subplot(122)
+    assert_is(fig.gca(), ax3)
+
+    # the final request for a polar axes will end up creating one
+    # with a spec of 111.
+    assert_is_not(fig.gca(polar=True), ax3)
+    assert_is_not(fig.gca(polar=True), ax2)
+    assert_equal(fig.gca().get_geometry(), (1, 1, 1))
+
+    fig.sca(ax1)
+    assert_is(fig.gca(projection='rectilinear'), ax1)
+    assert_is(fig.gca(), ax1)
+