rsatoolbox.vis.colors module

Classic colormap ported from matlab rsatoolbox

@author: iancharest

rsatoolbox.vis.colors.color_scale(n_cols: int, anchor_cols=None, monitor=False)

linearly interpolates between a set of given anchor colours to give n_cols and displays them if monitor is set

Parameters:

• n_cols (int) – number of colors for the colormap

• anchor_cols (numpy.ndarray, optional) – what color space to interpolate. Defaults to None.

• monitor (boolean, optional) – quick visualisation of the resulting colormap. Defaults to False.

Returns:

n_cols x 3 RGB array.

Return type:

numpy.ndarray

rsatoolbox.vis.colors.rdm_colormap_classic(n_cols: int = 256, monitor: bool = False)

this function provides a convenient colormap for visualizing dissimilarity matrices. it goes from blue to yellow and has grey for intermediate values.

Parameters:

• n_cols (int, optional) – precision of the colormap.

• 256. (Defaults to) –

Returns:

this matplotlib color object can be used as a cmap in any plot.

Return type:

[matplotlib ListedColormap]

Example

import numpy as np
import matplotlib.pyplot as plt
from rsatoolbox.vis.colors import rdm_colormap_classic
plt.imshow(np.random.rand(10,10),cmap=rdm_colormap_classic())
plt.colorbar()
plt.show()

(ported from Niko Kriegeskorte’s RDMcolormap.m)