getmap, colors – display color map


colors [ –rx ]

getmap [ colormap ]

Colors presents a grid showing the colors in the current color map. If the display is true color, colors shows a grid of the RGBV color map (see color(6)).

Clicking mouse button 1 over a color in the grid will display the map index for that color, its red, green, and blue components, and the 32–bit hexadecimal color value as defined in allocimage(2). If the –x option is specified, the components will also be listed in hexadecimal.

The –r option instead shows, in the same form, a grey–scale ramp.

A menu on mouse button 3 contains a single entry, to exit the program.

On 8–bit color–mapped displays, getmap loads the display's color map (default rgbv). The named colormap can be a file in the current directory or in the standard repository /lib/cmap. It can also be a string of the form gamma or gammaN, where N is a floating point value for the gamma, defining the contrast for a monochrome map. Similarly, rgamma and rgammaN define a reverse–video monochrome map. Finally, the names screen or display or vga are taken as synonyms for the current color map stored in the display hardware.

/lib/cmap directory of color map files


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