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Kill the unused, private _get_pixel_distance_along_axis. #13362

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Merged
merged 1 commit into from
Feb 5, 2019
Merged

Kill the unused, private _get_pixel_distance_along_axis. #13362

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62 changes: 0 additions & 62 deletions lib/matplotlib/axis.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1914,41 +1914,6 @@ def _get_offset_text(self):
self.offset_text_position = 'bottom'
return offsetText

def _get_pixel_distance_along_axis(self, where, perturb):
"""
Returns the amount, in data coordinates, that a single pixel
corresponds to in the locality given by "where", which is also given
in data coordinates, and is an x coordinate. "perturb" is the amount
to perturb the pixel. Usually +0.5 or -0.5.

Implementing this routine for an axis is optional; if present, it will
ensure that no ticks are lost due to round-off at the extreme ends of
an axis.
"""

# Note that this routine does not work for a polar axis, because of
# the 1e-10 below. To do things correctly, we need to use rmax
# instead of 1e-10 for a polar axis. But since we do not have that
# kind of information at this point, we just don't try to pad anything
# for the theta axis of a polar plot.
if self.axes.name == 'polar':
return 0.0

#
# first figure out the pixel location of the "where" point. We use
# 1e-10 for the y point, so that we remain compatible with log axes.

# transformation from data coords to display coords
trans = self.axes.transData
# transformation from display coords to data coords
transinv = trans.inverted()
pix = trans.transform_point((where, 1e-10))
# perturb the pixel
ptp = transinv.transform_point((pix[0] + perturb, pix[1]))
dx = abs(ptp[0] - where)

return dx

def set_label_position(self, position):
"""
Set the label position (top or bottom)
Expand Down Expand Up @@ -2261,33 +2226,6 @@ def _get_offset_text(self):
self.offset_text_position = 'left'
return offsetText

def _get_pixel_distance_along_axis(self, where, perturb):
"""
Returns the amount, in data coordinates, that a single pixel
corresponds to in the locality given by *where*, which is also given
in data coordinates, and is a y coordinate.

*perturb* is the amount to perturb the pixel. Usually +0.5 or -0.5.

Implementing this routine for an axis is optional; if present, it will
ensure that no ticks are lost due to round-off at the extreme ends of
an axis.
"""

#
# first figure out the pixel location of the "where" point. We use
# 1e-10 for the x point, so that we remain compatible with log axes.

# transformation from data coords to display coords
trans = self.axes.transData
# transformation from display coords to data coords
transinv = trans.inverted()
pix = trans.transform_point((1e-10, where))
# perturb the pixel
ptp = transinv.transform_point((pix[0], pix[1] + perturb))
dy = abs(ptp[1] - where)
return dy

def set_label_position(self, position):
"""
Set the label position (left or right)
Expand Down