to_rgba_array(c, alpha=None)
If c is a masked array, an ndarray is returned with a (0, 0, 0, 0) row for each masked value or row in c.
If alpha is given, force the alpha value of the returned RGBA tuple to alpha.
If None, the alpha value from c is used. If c does not have an alpha channel, then alpha defaults to 1.
alpha is ignored for the color value "none"
(case-insensitive), which always maps to (0, 0, 0, 0)
.
If alpha is a sequence and c is a single color, c will be repeated to match the length of alpha.
(n, 4) array of RGBA colors, where each channel (red, green, blue, alpha) can assume values between 0 and 1.
Convert c to a (n, 4) array of RGBA colors.
The following pages refer to to this document either explicitly or contain code examples using this.
matplotlib.colors
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