1PLGCOL0A(3plplot)                 PLplot API                 PLGCOL0A(3plplot)
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NAME

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

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

13       Returns 8-bit RGB values (0-255) and  PLFLT  alpha  transparency  value
14       (0.0-1.0)  for  given  color from cmap0 (see the PLplot documentation).
15       Values are negative if an invalid color id is given.
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17       Redacted form: plgcola(r, g, b)
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19       This function is used in example 30.
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ARGUMENTS

22       icol0 (PLINT(3plplot), input)
23              Index of desired cmap0 color.
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25       r (PLINT_NC_SCALAR(3plplot), output)
26              Returned value of the red intensity in the range from 0 to 255.
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28       g (PLINT_NC_SCALAR(3plplot), output)
29              Returned value of the green intensity in the  range  from  0  to
30              255.
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32       b (PLINT_NC_SCALAR(3plplot), output)
33              Returned value of the blue intensity in the range from 0 to 255.
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35       alpha (PLFLT_NC_SCALAR(3plplot), output)
36              Returned  value  of  the  alpha  transparency  in the range from
37              (0.0-1.0).
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AUTHORS

41       Many   developers   (who   are   credited   at    http://plplot.source‐
42       forge.net/credits.php)  have  contributed  to PLplot over its long his‐
43       tory.
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SEE ALSO

46       PLplot   documentation   at    http://plplot.sourceforge.net/documenta‐
47       tion.php.
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51                                 August, 2017                PLGCOL0A(3plplot)