plscmap1a: Set cmap1 colors using 8-bit RGB values and double alpha transparency values

plscmap1a (r,
 g,
 b,
 alpha,
 ncol1);
 

Set cmap1 colors using 8-bit RGB values (see the section called “Color Map1”) and double alpha transparency values. This also sets the number of colors.

r (const PLINT *, input)

Pointer to array with set of unsigned 8-bit integers (0-255) representing the degree of red in the color.

g (const PLINT *, input)

Pointer to array with set of unsigned 8-bit integers (0-255) representing the degree of green in the color.

b (const PLINT *, input)

Pointer to array with set of unsigned 8-bit integers (0-255) representing the degree of blue in the color.

alpha (const PLFLT *, input)

Pointer to array with set of double values (0.0-1.0) representing the alpha transparency value of the color.

ncol1 (PLINT, input)

Number of items in the r, g, b, and alpha arrays.

Redacted form: plscmap1a(r, g, b, alpha)

This function is used in example 31.