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Simplify Axis.get_{major,minor}_ticks. #10303

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Merged
merged 1 commit into from
Jan 24, 2018
Merged

Simplify Axis.get_{major,minor}_ticks. #10303

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51 changes: 16 additions & 35 deletions 51 lib/matplotlib/axis.py
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Original file line number Diff line number Diff line change
Expand Up @@ -803,8 +803,6 @@ def reset_ticks(self):

self.majorTicks.extend([self._get_tick(major=True)])
self.minorTicks.extend([self._get_tick(major=False)])
self._lastNumMajorTicks = 1
self._lastNumMinorTicks = 1

try:
self.set_clip_path(self.axes.patch)
Expand Down Expand Up @@ -1362,48 +1360,31 @@ def get_major_ticks(self, numticks=None):
'get the tick instances; grow as necessary'
if numticks is None:
numticks = len(self.get_major_locator()())
if len(self.majorTicks) < numticks:
# update the new tick label properties from the old
for i in range(numticks - len(self.majorTicks)):
tick = self._get_tick(major=True)
self.majorTicks.append(tick)

if self._lastNumMajorTicks < numticks:
protoTick = self.majorTicks[0]
for i in range(self._lastNumMajorTicks, len(self.majorTicks)):
tick = self.majorTicks[i]
if self._gridOnMajor:
tick.gridOn = True
self._copy_tick_props(protoTick, tick)

self._lastNumMajorTicks = numticks
ticks = self.majorTicks[:numticks]
while len(self.majorTicks) < numticks:
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Did we decide that the _lastNumMajorTicks logic wasn't needed? What did all that do and why can we remove it? Certainly your change is simpler, but it seems most of the un-simpleness in the old code was because of the _lastNumMajorTicks logic.

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@anntzer anntzer Jan 23, 2018 •
edited
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It's private, unused anywhere else, and, to the best of my understanding, this implementation does the same thing...
It was introduced in 08610fc and never touched since.

# update the new tick label properties from the old
tick = self._get_tick(major=True)
self.majorTicks.append(tick)
if self._gridOnMajor:
tick.gridOn = True
self._copy_tick_props(self.majorTicks[0], tick)

return ticks
return self.majorTicks[:numticks]

def get_minor_ticks(self, numticks=None):
'get the minor tick instances; grow as necessary'
if numticks is None:
numticks = len(self.get_minor_locator()())

if len(self.minorTicks) < numticks:
while len(self.minorTicks) < numticks:
# update the new tick label properties from the old
for i in range(numticks - len(self.minorTicks)):
tick = self._get_tick(major=False)
self.minorTicks.append(tick)

if self._lastNumMinorTicks < numticks:
protoTick = self.minorTicks[0]
for i in range(self._lastNumMinorTicks, len(self.minorTicks)):
tick = self.minorTicks[i]
if self._gridOnMinor:
tick.gridOn = True
self._copy_tick_props(protoTick, tick)

self._lastNumMinorTicks = numticks
ticks = self.minorTicks[:numticks]

return ticks
tick = self._get_tick(major=False)
self.minorTicks.append(tick)
if self._gridOnMinor:
tick.gridOn = True
self._copy_tick_props(self.minorTicks[0], tick)

return self.minorTicks[:numticks]

def grid(self, b=None, which='major', **kwargs):
"""
Expand Down
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