Generates a magenta, red, yellow colormap.
PLASMA(len)
len |
- |
Optional. An integer, the colormap length. Defaults to the length of the current colormap. |
A table of RGB triples suitable for the SETCOLORMAP function.
clen = length(getcolormap());
W1: density(ravel(rep(0..(clen-1), 32), clen)');plasma
creates a table of 32 x N (where N == colormap length) RBG values and displays the resulting colors. The resulting image is a vertical plot of colors ranging from magenta (lowest) to yellow (highest).
W1: inferno;showcmap()
W2: magma;showcmap()
W3: plasma;showcmap()
W1, W2 and W3 display similar 32x256 colormaps where 256 is the colormap length.
plasma by itself sets the colormap and shading.
a = plasma or setcolormap(plasma) returns the RGB values. In this case, use SETSHADING to make the new colormap take effect on an existing density or 2D plot.
PLASMA is a perceptually uniform colormap that is more vibrant than INFERNO with a smooth, uniform brightness increase. It is high contrast with very high saturation.
See CIVIDIS, INFERNO, MAGMA and VIRIDIS for more perceptually uniform colormaps.