GNUPlot Manual
GNUPlot Manual
GNUPlot Manual
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90 gnuplot 4.0 36 SET-SHOW<br />
The command unset polar changes the meaning of the plot back to the default rectangular coordinate<br />
system.<br />
The set polar command is not supported for splots. See the set mapping (p. 76) command for<br />
similar functionality for splot (p. 154)s.<br />
While in polar coordinates the meaning of an expression in t is really r = f(t), where t is an angle of<br />
rotation. The trange controls the domain (the angle) of the function, and the x and y ranges control<br />
the range of the graph in the x and y directions. Each of these ranges, as well as the rrange, may be<br />
autoscaled or set explicitly. See set xrange (p. 148) for details of all the ranges (p. 46) commands.<br />
Example:<br />
set polar<br />
plot t*sin(t)<br />
plot [-2*pi:2*pi] [-3:3] [-3:3] t*sin(t)<br />
The first plot uses the default polar angular domain of 0 to 2*pi. The radius and the size of the graph<br />
are scaled automatically. The second plot expands the domain, and restricts the size of the graph to<br />
[-3:3] in both directions.<br />
You may want to set size square to have gnuplot try to make the aspect ratio equal to unity, so that<br />
circles look circular. See also<br />
and<br />
polar demos (polar.dem)<br />
polar data plot (poldat.dem).<br />
36.52 Print<br />
The set print command redirects the output of the print command to a file.<br />
Syntax:<br />
set print<br />
set print "-"<br />
set print ""<br />
set print "" append<br />
set print "|"<br />
Without "", the output file is restored to . The "-" means<br />
. The append flag causes the file to be opened in append mode. A starting<br />
with "|" is opened as a pipe to the on platforms that support piping.<br />
36.53 Rmargin<br />
The command set rmargin sets the size of the right margin. Please see set margin (p. 77) for details.<br />
36.54 Rrange<br />
The set rrange command sets the range of the radial coordinate for a graph in polar mode. Please see<br />
set xrange (p. 148) for details.<br />
36.55 Samples<br />
The sampling rate of functions, or for interpolating data, may be changed by the set samples command.<br />
Syntax:<br />
set samples {,}<br />
show samples