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Simplify delaxes. #26026

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Merged
merged 1 commit into from
Jun 1, 2023
Merged

Simplify delaxes. #26026

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1 change: 1 addition & 0 deletions lib/matplotlib/cbook.py
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Original file line number Diff line number Diff line change
Expand Up @@ -827,6 +827,7 @@ def joined(self, a, b):
return (self._mapping.get(a, object()) is self._mapping.get(b))

def remove(self, a):
"""Remove *a* from the grouper, doing nothing if it is not there."""
set_a = self._mapping.pop(a, None)
if set_a:
set_a.remove(a)
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42 changes: 16 additions & 26 deletions lib/matplotlib/figure.py
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Expand Up @@ -925,38 +925,28 @@ def delaxes(self, ax):
Remove the `~.axes.Axes` *ax* from the figure; update the current Axes.
"""

def _reset_locators_and_formatters(axis):
# Set the formatters and locators to be associated with axis
# (where previously they may have been associated with another
# Axis instance)
axis.get_major_formatter().set_axis(axis)
axis.get_major_locator().set_axis(axis)
axis.get_minor_formatter().set_axis(axis)
axis.get_minor_locator().set_axis(axis)

def _break_share_link(ax, grouper):
siblings = grouper.get_siblings(ax)
if len(siblings) > 1:
grouper.remove(ax)
for last_ax in siblings:
if ax is not last_ax:
return last_ax
return None

self._axstack.remove(ax)
self._axobservers.process("_axes_change_event", self)
self.stale = True
self._localaxes.remove(ax)
self.canvas.release_mouse(ax)

# Break link between any shared axes
for name in ax._axis_names:
last_ax = _break_share_link(ax, ax._shared_axes[name])
if last_ax is not None:
_reset_locators_and_formatters(last_ax._axis_map[name])

# Break link between any twinned axes
_break_share_link(ax, ax._twinned_axes)
for name in ax._axis_names: # Break link between any shared axes
grouper = ax._shared_axes[name]
siblings = [other for other in grouper.get_siblings(ax) if other is not ax]
if not siblings: # Axes was not shared along this axis; we're done.
continue
grouper.remove(ax)
# Formatters and locators may previously have been associated with the now
# removed axis. Update them to point to an axis still there (we can pick
# any of them, and use the first sibling).
remaining_axis = siblings[0]._axis_map[name]
remaining_axis.get_major_formatter().set_axis(remaining_axis)
remaining_axis.get_major_locator().set_axis(remaining_axis)
remaining_axis.get_minor_formatter().set_axis(remaining_axis)
remaining_axis.get_minor_locator().set_axis(remaining_axis)

ax._twinned_axes.remove(ax) # Break link between any twinned axes.

def clear(self, keep_observers=False):
"""
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