bionic (3) plscmap1la.3plplot.gz

Provided by: plplot-doc_5.13.0+dfsg-6ubuntu2_all bug

NAME
       plscmap1la - Set cmap1 colors and alpha transparency using a piece-wise linear relationship


SYNOPSIS
       plscmap1la(itype, npts, intensity, coord1, coord2, coord3, alpha, alt_hue_path)


DESCRIPTION
       This  is  a  variant of plscmap1l(3plplot) that supports alpha channel transparency. It sets cmap1 colors
       using a piece-wise linear relationship between cmap1 intensity index (0.0-1.0) and position in HLS or RGB
       color  space  (see the PLplot documentation) with alpha transparency value (0.0-1.0). It may be called at
       any time.

       Redacted form: plscmap1la(itype, intensity, coord1, coord2, coord3, alpha, alt_hue_path)

       This function is used in example 30.


ARGUMENTS
       itype (PLBOOL(3plplot), input)
              true: RGB, false: HLS.

       npts (PLINT(3plplot), input)
              number of control points.

       intensity (PLFLT_VECTOR(3plplot), input)
              A vector containing the cmap1 intensity index (0.0-1.0) in ascending order for each control point.

       coord1 (PLFLT_VECTOR(3plplot), input)
              A vector containing the first coordinate (H or R) for each control point.

       coord2 (PLFLT_VECTOR(3plplot), input)
              A vector containing the second coordinate (L or G) for each control point.

       coord3 (PLFLT_VECTOR(3plplot), input)
              A vector containing the third coordinate (S or B) for each control point.

       alpha (PLFLT_VECTOR(3plplot), input)
              A vector containing the alpha transparency value (0.0-1.0) for each control point.

       alt_hue_path (PLBOOL_VECTOR(3plplot), input)
              A vector (with npts - 1 elements) containing the alternative interpolation  method  Boolean  value
              for  each  control  point interval.  (alt_hue_path[i] refers to the interpolation interval between
              the i and i + 1 control points).


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.

                                                 November, 2017                              PLSCMAP1LA(3plplot)