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.TH PLSCOLBGA 3plplot  "August, 2017" "" "PLplot API"
.SH NAME
\fBplscolbga\fP - Set the background color by 8-bit RGB value and PLFLT alpha transparency value.
.SH SYNOPSIS
\fBplscolbga\fP(\fIr\fP, \fIg\fP, \fIb\fP, \fIalpha\fP)
.SH DESCRIPTION

.P
Set the background color (color 0 in cmap0) by 8-bit RGB value and PLFLT alpha transparency value (see the PLplot documentation).
.P
This function is used in example 31.
.SH ARGUMENTS
.TP
\fIr\fP (\fBPLINT\fP(3plplot), input)
Unsigned 8-bit integer (0-255) representing the degree of red in the color.
.TP
\fIg\fP (\fBPLINT\fP(3plplot), input)
Unsigned 8-bit integer (0-255) representing the degree of green in the color.
.TP
\fIb\fP (\fBPLINT\fP(3plplot), input)
Unsigned 8-bit integer (0-255) representing the degree of blue in the color.
.TP
\fIalpha\fP (\fBPLFLT\fP(3plplot), input)
Value of the alpha transparency in the range (0.0-1.0).

.SH AUTHORS
Many developers (who are credited at http://plplot.sourceforge.net/credits.php)
have contributed to PLplot over its long history.
.SH SEE ALSO
PLplot documentation at http://plplot.sourceforge.net/documentation.php.
