gnuplot documentation

77 TERMINAL gnuplot 4.3 171
which uses white for the non-transparent background, black for borders, gray for the axes, and red,
orange, medium aquamarine, thistle 3, light blue, blue, plum and dark violet for eight plotting colors.
set terminal gif font ’arial’ 14 size 800,600
which searches for a TrueType font with face name ’arial’ in the directory specified by the environment
variable GDFONTPATH and 14pt font size.
77.25 Gnugraph(GNU plotutils)
The gnugraph driver produces device-independent output in the GNU plot graphics language. The
default size of the PostScript results generated by "plot2ps" is 5 x 3 inches; this can be increased up to
about 8.25 x 8.25 by set size.
Syntax:
set terminal gnugraph {""} {}
{type } {size ""}
which defaults to 10-point "Courier".
For type, the following options are accepted: X, pnm, gif, ai, ps, cgm, fig, pcl5, hpgl, tek, and
meta (default). The size option (default is a4) is passed straight through to plotutils, it’s the user’s
responsibility to provide correct values. Details can be found in the plotutils documentation.
Examples:
set terminal gnugraph type hpgl size "a4"
set terminal gnugraph size "a4,xoffset=-5mm,yoffset=2.0cm" type pnm
There is a non-GNU version of the gnugraph driver which cannot be compiled unless this version is
left out.
77.26 Gpic
The gpic terminal driver generates GPIC graphs in the Free Software Foundations’s "groff" package.
The default size is 5 x 3 inches. The only option is the origin, which defaults to (0,0).
Syntax:
set terminal gpic { }
where x and y are in inches.
A simple graph can be formatted using
groff -p -mpic -Tps file.pic > file.ps.
The output from pic can be pipe-lined into eqn, so it is possible to put complex functions in a graph
with the set label and set {x/y}label commands. For instance,
set ylab ’@space 0 int from 0 to x alpha ( t ) roman d t@’
will label the y axis with a nice integral if formatted with the command:
gpic filename.pic | geqn -d@@ -Tps | groff -m[macro-package] -Tps
> filename.ps
Figures made this way can be scaled to fit into a document. The pic language is easy to understand, so
the graphs can be edited by hand if need be. All co-ordinates in the pic-file produced by gnuplot are
given as x+gnuplotx and y+gnuploty. By default x and y are given the value 0. If this line is removed
with an editor in a number of files, one can put several graphs in one figure like this (default size is
5.0x3.0 inches):