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gnuplot
commands which actually create a plot: plot
,
splot
and replot
. plot
generates 2-d plots, splot
generates 3-d
plots (actually 2-d projections, of course), and replot
appends its
arguments to the previous plot
or splot
and executes the modified
command.
Much of the general information about plotting can be found in the discussion
of plot
; information specific to 3-d can be found in the splot
section.
plot
operates in either rectangular or polar coordinates -- see set polar
for details of the latter. splot
operates only in rectangular coordinates,
but the set mapping
command allows for a few other coordinate systems to be
treated. In addition, the using
option allows both plot
and splot
to
treat almost any coordinate system you'd care to define.
splot
can plot surfaces and contours in addition to points and/or lines.
In addition to splot
, see set isosamples
for information about defining
the grid for a 3-d function; splot datafile
for information about the
requisite file structure for 3-d data values; and set contour
and `set
cntrparam` for information about contours.
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