plgcolbga.3plplot - Man Page

plgcolbga(r, g, b, alpha)

Returns the background color (cmap0[0]) by 8-bit RGB value and PLFLT alpha transparency value.

This function is used in example 31.

r (PLINT_NC_SCALAR(3plplot), output)

Returned value of the red intensity in the range from 0 to 255.

g (PLINT_NC_SCALAR(3plplot), output)

Returned value of the green intensity in the range from 0 to 255.

b (PLINT_NC_SCALAR(3plplot), output)

Returned value of the blue intensity in the range from 0 to 255.

alpha (PLFLT_NC_SCALAR(3plplot), output)

Returned value of the alpha transparency in the range (0.0-1.0).

Many developers (who are credited at http://plplot.org/credits.php) have contributed to PLplot over its long history.

PLplot documentation at http://plplot.org/documentation.php.