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PLGCOL0A(3plplot) PLplot API PLGCOL0A(3plplot)

NAME

plgcol0a - Returns 8-bit RGB values and PLFLT alpha transparency value for given color index from cmap0

SYNOPSIS

plgcol0a(icol0, r, g, b, alpha)

DESCRIPTION

Returns 8-bit RGB values (0-255) and PLFLT alpha transparency value (0.0-1.0) for given color from cmap0 (see the PLplot documentation). Values are negative if an invalid color id is given.

Redacted form: plgcola(r, g, b)

This function is used in example 30.

ARGUMENTS

Index of desired cmap0 color.
Returned value of the red intensity in the range from 0 to 255.
Returned value of the green intensity in the range from 0 to 255.
Returned value of the blue intensity in the range from 0 to 255.
Returned value of the alpha transparency in the range from (0.0-1.0).

AUTHORS

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

SEE ALSO

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

August, 2021