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Add Axis.get_inverted and Axis.set_inverted. #13330

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Merged
merged 1 commit into from
Feb 2, 2019
Merged

Add Axis.get_inverted and Axis.set_inverted. #13330

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11 changes: 11 additions & 0 deletions doc/users/next_whats_new/2018-02-01-AL.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
Added `Axis.get_inverted` and `Axis.set_inverted`
`````````````````````````````````````````````````

The `Axis.get_inverted` and `Axis.set_inverted` methods query and set whether
the axis uses "inverted" orientation (i.e. increasing to the left for the
x-axis and to the bottom for the y-axis).

They perform tasks similar to `Axes.xaxis_inverted`, `Axes.yaxis_inverted`,
`Axes.invert_xaxis`, and `Axes.invert_yaxis`, with the specific difference that
`.set_inverted` makes it easier to set the invertedness of an axis regardless
of whether it had previously been inverted before.
10 changes: 4 additions & 6 deletions lib/matplotlib/axes/_base.py
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Expand Up @@ -2998,7 +2998,7 @@ def invert_xaxis(self):
get_xlim, set_xlim
get_xbound, set_xbound
"""
self.set_xlim(self.get_xlim()[::-1], auto=None)
self.xaxis.set_inverted(not self.xaxis.get_inverted())

def xaxis_inverted(self):
"""
Expand All @@ -3012,8 +3012,7 @@ def xaxis_inverted(self):
get_xlim, set_xlim
get_xbound, set_xbound
"""
left, right = self.get_xlim()
return right < left
return self.xaxis.get_inverted()

def get_xbound(self):
"""
Expand Down Expand Up @@ -3404,7 +3403,7 @@ def invert_yaxis(self):
get_ylim, set_ylim
get_ybound, set_ybound
"""
self.set_ylim(self.get_ylim()[::-1], auto=None)
self.yaxis.set_inverted(not self.yaxis.get_inverted())

def yaxis_inverted(self):
"""
Expand All @@ -3418,8 +3417,7 @@ def yaxis_inverted(self):
get_ylim, set_ylim
get_ybound, set_ybound
"""
bottom, top = self.get_ylim()
return top < bottom
return self.yaxis.get_inverted()

def get_ybound(self):
"""
Expand Down
25 changes: 25 additions & 0 deletions lib/matplotlib/axis.py
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Expand Up @@ -909,6 +909,31 @@ def set_data_interval(self):
'''set the axis data limits'''
raise NotImplementedError('Derived must override')

def get_inverted(self):
"""
Return whether the axis is oriented in the "inverse" direction.

The "normal" direction is increasing to the right for the x-axis and to
the top for the y-axis; the "inverse" direction is increasing to the
left for the x-axis and to the bottom for the y-axis.
"""
low, high = self.get_view_interval()
return high < low

def set_inverted(self, inverted):
"""
Set whether the axis is oriented in the "inverse" direction.

The "normal" direction is increasing to the right for the x-axis and to
the top for the y-axis; the "inverse" direction is increasing to the
left for the x-axis and to the bottom for the y-axis.
"""
a, b = self.get_view_interval()
if inverted:
self.set_view_interval(max(a, b), min(a, b), ignore=True)
else:
self.set_view_interval(min(a, b), max(a, b), ignore=True)

def set_default_intervals(self):
'''set the default limits for the axis data and view interval if they
are not mutated'''
Expand Down