Generates a black, magenta, red, yellow colormap.
INFERNO(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)');inferno
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 black (lowest) to bright 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.
inferno by itself sets the colormap and shading.
a = inferno or setcolormap(inferno) returns the RGB values. In this case, use SETSHADING to make the new colormap take effect on an existing density or 2D plot.
INFERNO is a perceptually uniform colormap with high contrast and color-blind friendly.
See CIVIDIS, MAGMA, PLASMA and VIRIDIS for more perceptually uniform colormaps.