| 
	    plgcol0a
	  ( | icol0, | 
| r, | |
| g, | |
| b, | |
| alpha ); | 
Returns 8-bit RGB values (0-255) and PLFLT alpha transparency value (0.0-1.0) for given color from cmap0 (see the section called “Color Map0”). Values are negative if an invalid color id is given.
icol0
	  (PLINTIndex of desired cmap0 color.
r
	  (PLINT_NC_SCALARReturned value of the red intensity in the range from 0 to 255.
g
	  (PLINT_NC_SCALARReturned value of the green intensity in the range from 0 to 255.
b
	  (PLINT_NC_SCALARReturned value of the blue intensity in the range from 0 to 255.
alpha
	  (PLFLT_NC_SCALARReturned value of the alpha transparency in the range from (0.0-1.0).
      Redacted form: plgcola(r, g, b)
    
This function is used in example 30.