plgcol0a3plplot
Returns 8-bit rgb values and plflt alpha transparency value for given color index from cmap0
Usage
plgcol0a(icol0, r, g, b, alpha)
Overview
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
icol0 (PLINT(3plplot), input)
|
Index of desired cmap0 color. |
|---|---|
r (PLINT_NC_SCALAR(3plplot), output)
|
Returned value of the red intensity in the range from 0 to 255. |
g (PLINT_NC_SCALAR(3plplot), output)
|
Returned value of the green intensity in the range from 0 to 255. |
b (PLINT_NC_SCALAR(3plplot), output)
|
Returned value of the blue intensity in the range from 0 to 255. |
alpha (PLFLT_NC_SCALAR(3plplot), output)
|
Returned value of the alpha transparency in the range from (0.0-1.0). |
Releases
9 releases since Debian 5.0 (Lenny); the text changed 8 times.