Merge pull request #13362 from anntzer/get_pixel_distance_along_axis

jklymak · web-flow · commit ebbb258fb625 · 2019-02-05T09:38:49.000-08:00
Kill the unused, private _get_pixel_distance_along_axis.
diff --git a/lib/matplotlib/axis.py b/lib/matplotlib/axis.py
@@ -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)
@@ -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)
