1PLSCMAP1LA(3plplot)               PLplot API               PLSCMAP1LA(3plplot)
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NAME

6       plscmap1la  - Set color map1 colors using a piece-wise linear relation‐
7       ship
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SYNOPSIS

10       plscmap1la(itype, npts, pos, coord1, coord2, coord3, coord4, rev)
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DESCRIPTION

13       This is a version of  plscmap1l(3plplot)  that  supports  alpha  trans‐
14       parency.  It sets color map1 colors using a piece-wise linear relation‐
15       ship between position in the color map (from 0 to 1)  and  position  in
16       HLS  or RGB color space (see the PLplot documentation) with alpha value
17       (0.0 - 1.0). It may be called at any time.
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19       This function is used in example 30.
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ARGUMENTS

22       itype (PLBOOL, input)
23              true: RGB, false: HLS.
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25       npts (PLINT, input)
26              number of control points
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28       pos (PLFLT *, input)
29              position for each control point (between 0.0 and 1.0, in ascend‐
30              ing order)
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32       coord1 (PLFLT *, input)
33              first coordinate (H or R) for each control point
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35       coord2 (PLFLT *, input)
36              second coordinate (L or G) for each control point
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38       coord3 (PLFLT *, input)
39              third coordinate (S or B) for each control point
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41       coord4 (PLFLT *, input)
42              fourth coordinate, the alpha value for each control point
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44       rev (PLBOOL: *, input)
45              reverse  flag  for  each  control  point.  (rev[i] refers to the
46              interpolation interval between the i and i + 1 control points).
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AUTHORS

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

56       PLplot documentation at http://plplot.sourceforge.net/resources.
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60                                  July, 2010               PLSCMAP1LA(3plplot)
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