SHOWCMAP

Purpose:

Displays the current colormap as a density plot.

SHOWCMAP(series, len)

series	-	Optional. A series with a colormap, the source colormap. Defaults to the current colormap.
len	-	Optional. An integer, the colormap length. Defaults to the length of the current colormap.

A table of values graded from 0 to 255 displayed as an image. If a series is specified, the Y values of the colormap is scaled to the series.

W1: setcolormap(turbo);showcmap

$image\showcmap.png$

sets the colormap to colors ranging from blue to red and displays the colors as a density plot.

W1: setcolormap(turbo);showcmap'

Transposed Showcmap

Same as above, except the colormap is transposed to produce horizontally increasing color indices.

W1: spline2(ravel(gnorm(100, 1), 10), 3)

W2: showcmap(w1)

Shows the colormap in W2 scaled to the Z values of W1.

Use SETSHADING to make a new colormap take effect on an existing density plot.

The following built-in colormaps are available:

AUTUMN	Red, orange, yellow colormap
BONE	Blue tinted gray scale colormap
CIVIDIS	Blue, green, yellow colormap
COOL	Shades of blue
COPPER	Shades of copper colormap
FLAG	Repeating red, orange, yellow, green, blue, violet colormap.
GOULDIAN	Blue, green, yellow colormap
GRAY	Black & white colormap
HOT	Black, red, yellow, white colormap
HSV	Red, yellow, green, cyan, blue, magenta, red colormap
INFERNO	Magenta, red, yellow colormap
MAGMA	Magenta, red, yellow colormap
PARULINE	Blue, green, yellow, orange colormap
PINK	Black, red, yellow, white light colormap
PLASMA	Magenta, red, yellow colormap
PRISM	Repeating red, orange, yellow, green, blue, violet colormap.
RAINBOW	Visible color spectrum colormap
SPRING	Magenta, pink, yellow colormap
SUMMER	Green to yellow colormap
TURBO	Red, blue, green, yellow colormap
VIRIDIS	Blue, green, yellow colormap
WINTER	Blue to green colormap