Fix for issue #10062

Akshay Nair · Akshay Nair · commit 3fd17270c451 · 2018-03-15T15:19:32.000-04:00
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -1015,7 +1015,8 @@ def cla(self):
             self.xaxis.major = self._sharex.xaxis.major
             self.xaxis.minor = self._sharex.xaxis.minor
             x0, x1 = self._sharex.get_xlim()
-            self.set_xlim(x0, x1, emit=False, auto=None)
+            self.set_xlim(x0, x1, emit=False,
+                          auto=self._sharex.get_autoscalex_on())
             self.xaxis._scale = mscale.scale_factory(
                     self._sharex.xaxis.get_scale(), self.xaxis)
         else:
@@ -1029,7 +1030,8 @@ def cla(self):
             self.yaxis.major = self._sharey.yaxis.major
             self.yaxis.minor = self._sharey.yaxis.minor
             y0, y1 = self._sharey.get_ylim()
-            self.set_ylim(y0, y1, emit=False, auto=None)
+            self.set_ylim(y0, y1, emit=False,
+                          auto=self._sharey.get_autoscaley_on())
             self.yaxis._scale = mscale.scale_factory(
                     self._sharey.yaxis.get_scale(), self.yaxis)
         else:
@@ -1045,8 +1047,10 @@ def cla(self):
         if (rcParams['ytick.minor.visible']):
             self.yaxis.set_minor_locator(mticker.AutoMinorLocator())
 
-        self._autoscaleXon = True
-        self._autoscaleYon = True
+        if self._sharex is None:
+            self._autoscaleXon = True
+        if self._sharey is None:
+            self._autoscaleYon = True
         self._xmargin = rcParams['axes.xmargin']
         self._ymargin = rcParams['axes.ymargin']
         self._tight = None
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -5127,6 +5127,23 @@ def test_remove_shared_axes_relim():
     assert_array_equal(ax_lst[0][1].get_xlim(), orig_xlim)
 
 
+def test_shared_axes_autoscale():
+    l = np.arange(-80,90,40)
+    t = np.random.random_sample((l.size,l.size))
+
+    ax1 = plt.subplot(211)
+    ax1.set_xlim(-1000,1000)
+    ax1.set_ylim(-1000,1000)
+    ax1.contour(l,l,t)
+
+    ax2 = plt.subplot(212,sharex=ax1,sharey=ax1)
+    ax2.contour(l,l,t)
+    assert not ax1.get_autoscalex_on() and not ax2.get_autoscalex_on()
+    assert not ax1.get_autoscaley_on() and not ax2.get_autoscaley_on()
+    assert ax1.get_xlim() == ax2.get_xlim() == (-1000, 1000)
+    assert ax1.get_ylim() == ax2.get_ylim() == (-1000, 1000)
+
+
 def test_adjust_numtick_aspect():
     fig, ax = plt.subplots()
     ax.yaxis.get_major_locator().set_params(nbins='auto')
