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Colorbar Add kw arguement to colorbar to reenable edges around faces #1301

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Colorbar Add kw arguement to colorbar to reenable edges around faces #1301

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16 changes: 14 additions & 2 deletions lib/matplotlib/colorbar.py
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Expand Up @@ -97,7 +97,13 @@
:class:`~matplotlib.ticker.Formatter` object may be
given instead.
*drawedges* [ False | True ] If true, draw lines at color
boundaries.
boundaries
*drawfcedges* [ False | True ] If true, draw face-colored edges around
color segments. This helps with viewers that render
white lines between faces in the colorbar, however it
has negative consequences when ploting with alpha < 1
or colorbar extensions and is thus not enabled by default.
See github issue #1178 and #1188.
============ ====================================================

The following will probably be useful only in the context of
Expand Down Expand Up @@ -243,6 +249,7 @@ def __init__(self, ax, cmap=None,
ticks=None,
format=None,
drawedges=False,
drawfcedges=False,
filled=True,
extendfrac=None,
):
Expand All @@ -259,6 +266,7 @@ def __init__(self, ax, cmap=None,
self.spacing = spacing
self.orientation = orientation
self.drawedges = drawedges
self.drawfcedges = drawfcedges
self.filled = filled
self.extendfrac = extendfrac
self.solids = None
Expand Down Expand Up @@ -447,10 +455,14 @@ def _add_solids(self, X, Y, C):
args = (X, Y, C)
else:
args = (np.transpose(Y), np.transpose(X), np.transpose(C))
if self.drawfcedges == True:
edgecolors = 'face'
else:
edgecolors = 'None'
kw = dict(cmap=self.cmap,
norm=self.norm,
alpha=self.alpha,
edgecolors='None')
edgecolors=edgecolors)
# Save, set, and restore hold state to keep pcolor from
# clearing the axes. Ordinarily this will not be needed,
# since the axes object should already have hold set.
Expand Down