The PLplot Plotting Library: Programmer's Reference Manual
PrevChapter 19. The Common API for PLplotNext

plgcol0: Returns 8-bit RGB values for given color from color map0

plgcol0 (icol0, r, g, b);

Returns 8-bit RGB values (0-255) for given color from color map0 (see the Section called Color Map0 in Chapter 3). Values are negative if an invalid color id is given.

icol0 (PLINT, input)

Index of desired cmap0 color.

r (PLINT *, output)

Pointer to 8-bit red value.

g (PLINT *, output)

Pointer to 8-bit green value.

b (PLINT *, output)

Pointer to 8-bit blue value.

Redacted form: plgcol0(icol0, r, g, b)

This function is used in example 2.

PrevHomeNext
plgchr: Get character default height and current (scaled) heightUpplgcol0a: Returns 8-bit RGB values and double alpha value for given color from color map0.