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Commit5ad7028

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ksundenmeeseeksmachine
authored andcommitted
Backport PRmatplotlib#28355: MNT: Re-add matplotlib.cm.get_cmap
1 parente392b59 commit5ad7028

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‎lib/matplotlib/cm.py

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@@ -232,6 +232,44 @@ def get_cmap(self, cmap):
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globals().update(_colormaps)
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# This is an exact copy of pyplot.get_cmap(). It was removed in 3.9, but apparently
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# caused more user trouble than expected. Re-added for 3.9.1 and extended the
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# deprecation period for two additional minor releases.
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@_api.deprecated(
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'3.7',
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removal='3.11',
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alternative="``matplotlib.colormaps[name]`` or ``matplotlib.colormaps.get_cmap()``"
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" or ``pyplot.get_cmap()``"
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)
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defget_cmap(name=None,lut=None):
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"""
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Get a colormap instance, defaulting to rc values if *name* is None.
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Parameters
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----------
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name : `~matplotlib.colors.Colormap` or str or None, default: None
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If a `.Colormap` instance, it will be returned. Otherwise, the name of
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a colormap known to Matplotlib, which will be resampled by *lut*. The
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default, None, means :rc:`image.cmap`.
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lut : int or None, default: None
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If *name* is not already a Colormap instance and *lut* is not None, the
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colormap will be resampled to have *lut* entries in the lookup table.
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Returns
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-------
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Colormap
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"""
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ifnameisNone:
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name=mpl.rcParams['image.cmap']
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ifisinstance(name,colors.Colormap):
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returnname
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_api.check_in_list(sorted(_colormaps),name=name)
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iflutisNone:
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return_colormaps[name]
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else:
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return_colormaps[name].resampled(lut)
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def_auto_norm_from_scale(scale_cls):
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"""
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Automatically generate a norm class from *scale_cls*.

‎lib/matplotlib/cm.pyi

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@@ -19,6 +19,8 @@ class ColormapRegistry(Mapping[str, colors.Colormap]):
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_colormaps:ColormapRegistry= ...
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defget_cmap(name:str|colors.Colormap|None= ...,lut:int|None= ...)->colors.Colormap: ...
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classScalarMappable:
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cmap:colors.Colormap|None
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colorbar:Colorbar|None

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