trusty (3) plgcol0a.3plplot.gz

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NAME
       plgcol0a - Returns 8-bit RGB values and double 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 double 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.

       This function is used in example 30.


ARGUMENTS
       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.

       alpha (PLFLT *, output)
              Pointer to PLFLT alpha transparency value.


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


SEE ALSO
       PLplot documentation at http://plplot.sourceforge.net/documentation.php.

                                                 February, 2014                                PLGCOL0A(3plplot)