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Add clim opt #3381

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Add clim opt #3381

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fdc6115
Add colorbar lim option
Jan 12, 2019
f26cd3d
Remove extra line
Jan 12, 2019
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9 changes: 8 additions & 1 deletion holoviews/plotting/bokeh/element.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1324,6 +1324,10 @@ class ColorbarPlot(ElementPlot):
Number of discrete colors to use when colormapping or a set of color
intervals defining the range of values to map each color to.""")

clim = param.NumericTuple(default=(np.nan, np.nan), length=2, doc="""
User-specified colorbar axis range limits for the plot, as a tuple (low,high).
If specified, takes precedence over data and dimension ranges.""")

colorbar = param.Boolean(default=False, doc="""
Whether to display a colorbar.""")

Expand Down Expand Up @@ -1405,7 +1409,10 @@ def _get_colormapper(self, eldim, element, ranges, style, factors=None, colors=N

ncolors = None if factors is None else len(factors)
if eldim:
if dim_name in ranges:
# check if there's an actual value (not np.nan)
if sum((~np.isnan(v) for v in self.clim)):
low, high = self.clim
elif dim_name in ranges:
low, high = ranges[dim_name]['combined']
elif isinstance(eldim, dim):
low, high = np.nan, np.nan
Expand Down
8 changes: 8 additions & 0 deletions holoviews/plotting/mpl/element.py
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Expand Up @@ -631,6 +631,9 @@ def teardown_handles(self):


class ColorbarPlot(ElementPlot):
clim = param.NumericTuple(default=(np.nan, np.nan), length=2, doc="""
User-specified colorbar axis range limits for the plot, as a tuple (low,high).
If specified, takes precedence over data and dimension ranges.""")

colorbar = param.Boolean(default=False, doc="""
Whether to draw a colorbar.""")
Expand Down Expand Up @@ -775,6 +778,11 @@ def _norm_kwargs(self, element, ranges, opts, vdim, values=None, prefix=''):
self.handles[prefix+'color_dim'] = vdim

clim = opts.pop(prefix+'clims', None)

# check if there's an actual value (not np.nan)
if clim is None and sum((~np.isnan(v) for v in self.clim)):
clim = self.clim

if clim is None:
if not len(values):
clim = (0, 0)
Expand Down