Gnuplot - an interactive plotting program
A D V E R T I S E M E N T
These pages are still under construction.
Gnuplot is an interactive graphing program, which is available for many
different environments including Unix and
DOS/Windows. It
is a powerful tool used to create plots of data and functions. Gnuplot has many
settings which can be modified to fine-tune your plots. This tutorial will not
to go into too much detail about every possible setting, but will go over the
procedures to create some simple plots, with additional information about
settings available separately.
Getting Started
Commands for Gnuplot can be
typed in at
its prompt, or specified within a
command file
which you can specify as gnuplot's argument(s). Before plotting your data files
or functions, you must pick the output format. Gnuplot has a wide variety of
terminal and output
file types. Of these, four are applicable for use in Holmes 244:
- To the
screen (Workstation or X Terminal)
- To the
HP 7550A plotter (you must bring your o wn paper)
- To the
Postscript printer (also requires you to bring your paper)
- To a
graphics file.
Defining Functions and Data Files
Gnuplot allows both data and function plots, and also allows many plots to be
overlaid. In addition, you can
define your own
functions and use
data files.
Plot types available
Certain
"cosmetic" options for Gnuplot are universally used for the different plots.
Gnuplot can create the following kinds of plots:
- Two-dimensional plots
-
Data plots/Error bar plots
-
Function plots
-
Other available plot modes
- Three-dimensional plots
-
Data plots
-
Function plots
-
Surface/Contour
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