11.4 Color

The following routines deal with colors.

colorcomponents

Get RGB values corresponding to colors.

colorpixel

Get the pixel value corresponding to a color.

colorstogrey

Get greyscale values corresponding to colors.

pencolor

To set the pen color.

pixelsto8bit

To convert pixel values to 8-bit values and a colormap.

scale

To map image values to byte pixel values.

scalerange

To map image values to byte pixel values.

setbackground

To set the background color of a window.

setbg

To set the background color of a window.

setfg

To set the foreground color of a window.

setforeground

To set the foreground color of a window.

show_visuals

To see a list of visuals for the current monitor.

threecolors

To install or uninstall the "three colors" colormap.

tv3

To display images using the "three colors" colormap.

tvlct

To load or set a color table.

tvplane