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.TH PLSCMAP1LA 3plplot  "August, 2012" "" "PLplot API"
.SH NAME
\fBplscmap1la\fP - Set color map1 colors using a piece-wise linear relationship 
.SH SYNOPSIS
\fBplscmap1la\fP(\fIitype\fP, \fInpts\fP, \fIpos\fP, \fIcoord1\fP, \fIcoord2\fP, \fIcoord3\fP, \fIcoord4\fP, \fIrev\fP)
.SH DESCRIPTION

.P
This is a version of \fBplscmap1l\fP(3plplot) that supports alpha transparency. It sets color map1 colors using a piece-wise linear relationship between position in the color map (from 0 to 1) and position in HLS or RGB color space (see the PLplot documentation) with alpha value (0.0 - 1.0). It may be called at any time. 
.P
This function is used in example 30. 
.SH ARGUMENTS
.TP
\fIitype\fP (PLBOOL, input) 
true: RGB, false: HLS. 
.TP
\fInpts\fP (PLINT, input) 
number of control points 
.TP
\fIpos\fP (PLFLT *, input) 
position for each control point (between 0.0 and 1.0, in ascending order) 
.TP
\fIcoord1\fP (PLFLT *, input) 
first coordinate (H or R) for each control point 
.TP
\fIcoord2\fP (PLFLT *, input) 
second coordinate (L or G) for each control point 
.TP
\fIcoord3\fP (PLFLT *, input) 
third coordinate (S or B) for each control point 
.TP
\fIcoord4\fP (PLFLT *, input) 
fourth coordinate, the alpha value for each control point 
.TP
\fIrev\fP (PLBOOL: *, input) 
reverse flag for each control point. (rev[i] refers to the interpolation interval between the i and i + 1 control points). 

.SH AUTHORS
Geoffrey Furnish and Maurice LeBrun wrote and maintain PLplot.  This man page
was automatically generated from the DocBook source of the PLplot
documentation, maintained by Alan W. Irwin and Rafael Laboissiere.
.SH SEE ALSO
PLplot documentation at http://plplot.sourceforge.net/resources.