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Syntax:
set pixmap <index> colormap <name>
Another use of pixmaps is to store a gradient described by a named palette. This is an easy way to specify gradient fill for a rectangular area. It could be used to draw a separate colorbox for that named palette, or even as a background for the entire plot or the entire canvas.
set palette defined (0 "beige", 1 "light-cyan") set colormap new Gradient set pixmap 1 colormap Gradient behind set pixmap 1 at screen 0,0 size screen 1,1 plot <something>