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Module « scipy.cluster.hierarchy »

Fonction set_link_color_palette - module scipy.cluster.hierarchy

Signature de la fonction set_link_color_palette

def set_link_color_palette(palette) 

Description

help(scipy.cluster.hierarchy.set_link_color_palette)

Set list of matplotlib color codes for use by dendrogram.

Note that this palette is global (i.e., setting it once changes the colors
for all subsequent calls to `dendrogram`) and that it affects only the
the colors below ``color_threshold``.

Note that `dendrogram` also accepts a custom coloring function through its
``link_color_func`` keyword, which is more flexible and non-global.

Parameters
----------
palette : list of str or None
    A list of matplotlib color codes.  The order of the color codes is the
    order in which the colors are cycled through when color thresholding in
    the dendrogram.

    If ``None``, resets the palette to its default (which are matplotlib
    default colors C1 to C9).

Returns
-------
None

See Also
--------
dendrogram

Notes
-----
Ability to reset the palette with ``None`` added in SciPy 0.17.0.

Thread safety: using this function in a multi-threaded fashion may
result in `dendrogram` producing plots with unexpected colors.

Examples
--------
>>> import numpy as np
>>> from scipy.cluster import hierarchy
>>> ytdist = np.array([662., 877., 255., 412., 996., 295., 468., 268.,
...                    400., 754., 564., 138., 219., 869., 669.])
>>> Z = hierarchy.linkage(ytdist, 'single')
>>> dn = hierarchy.dendrogram(Z, no_plot=True)
>>> dn['color_list']
['C1', 'C0', 'C0', 'C0', 'C0']
>>> hierarchy.set_link_color_palette(['c', 'm', 'y', 'k'])
>>> dn = hierarchy.dendrogram(Z, no_plot=True, above_threshold_color='b')
>>> dn['color_list']
['c', 'b', 'b', 'b', 'b']
>>> dn = hierarchy.dendrogram(Z, no_plot=True, color_threshold=267,
...                           above_threshold_color='k')
>>> dn['color_list']
['c', 'm', 'm', 'k', 'k']

Now, reset the color palette to its default:

>>> hierarchy.set_link_color_palette(None)

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