8000 updates based on feedback from @timhoffm · matplotlib/matplotlib@ab61439 · GitHub
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updates based on feedback from @timhoffm 
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‎doc/api/colors_api.rst

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@@ -32,6 +32,7 @@ Color norms
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PowerNorm
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SymLogNorm
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TwoSlopeNorm
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MultiNorm
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Univariate Colormaps
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--------------------

‎lib/matplotlib/colorizer.py

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@@ -154,7 +154,13 @@ def to_rgba(self, x, alpha=None, bytes=False, norm=True):
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# Otherwise run norm -> colormap pipeline
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x = ma.asarray(< 7BBD span class=pl-s1>x)
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if norm:
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x = self.norm(x)
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if isinstance(self.norm, colors.MultiNorm):
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# using structured_output=False gives one less
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# memcopy operation
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x = self.norm(x, structured_output=False)
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else:
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x = self.norm(x)
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rgba = self.cmap(x, alpha=alpha, bytes=bytes)
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return rgba
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