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NAME

       plgcol0a  -  Returns  8-bit  RGB  values and double alpha value for given color from color
       map0.

SYNOPSIS

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

DESCRIPTION

       Returns 8-bit RGB values (0-255) and double alpha value (0.0 - 1.0) for  given color  from
       color map0 (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.

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

AUTHORS

       Geoffrey Furnish and Maurice  LeBrun  wrote  and  maintain  PLplot.   This  man  page  was
       automatically generated from the DocBook source of the PLplot documentation, maintained by
       Alan W. Irwin and Rafael Laboissiere.

SEE ALSO

       PLplot documentation at http://plplot.sourceforge.net/resources.

                                          February, 2012                        PLGCOL0A(3plplot)