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(gnuplot.info)Plotting

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Enter node , (file) or (file)node

 There are three `gnuplot` (Note: gnuplot ) commands which actually create a
 plot:  `plot` (Note: plot ), `splot` (Note: splot ) and  `replot`
 (Note: 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`
 (Note: polar ) for details of the latter.  `splot` operates only in
 rectangular coordinates, but the `set mapping` (Note: mapping ) command
 allows for a few other coordinate systems to be treated.  In addition, the
 `using` (Note: 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` (Note: isosamples ) for
 information about defining the grid for a 3-d function;  `splot datafile`
 (Note: data-file ) for information about the requisite file structure for
 3-d data values; and `set contour` (Note: contour ) and set cntrparam` for
 information about contours.