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Gnuplot PGF/TikZ terminal
The PGF/TikZ terminal mainly consists of a generic Lua terminal to
wrap the gnuplot terminal C functions. This allows writing gnuplot
terminals in Lua instead of C. The first (and currently only) implemented
`backend' is the PGF/TikZ terminal for the use with TeX/LaTeX.
The actual terminal functionality is a provided by a separate Lua script
`gnuplot-tikz.lua'. The LaTeX style file is usually derived from PGF/TikZ terminal
script to keep things consistent.
Why all that hassle?
There are are couple of terminals allready usable for LaTeX so why
writing another one?
Here is a brief list of reasons:
1. I like PGF/TikZ and there is no such terminal so far.
2. I also like lerning Lua and the use of Lua makes this terminal
very versatile, e.g. there is no recompilation necessary if
you want to change/add any terminal features and you also gain
all the benefits of using a scripting language in this
place -- whatever that means to you ;-)
3. Most advantages are directly related to PGF/TikZ:
a. rescaling the plot does not automatically change the linewidths
nor the size of points (aka plot marks), fonts, arrow tips or
fill patterns. The aspect ratio of these elements will also
remain unchanged on unproportional scalings.
b. you can directly produce documents of any output format
that is supported by PGF/TikZ.
c. changing the appearance of the plots is an easy task even
after the generation of the PGF/TikZ code. This can be done
locally or globally by changing certain TikZ-styles or
d. it is also easy to put the keys (aka legend) into the normal text
area (e.g. the plot caption), because the line and plotmark styles
e. overlaying of the plot with e.g. additional nodes, arrows etc. is
possible through the use the of tikz coordinates of the actual
For more reasons please have a look at the PGF/TikZ manual ;-)
Generating style and help file
To generate the style files and wrapper for the various TeX flavors enter
lua gnuplot-tikz.lua style
on the command line. The files generated should be
t-gnuplot-lua-tikz.tex (Context wrapper)
gnuplot-lua-tikz.tex (plain TeX wrapper)
gnuplot-lua-tikz.sty (LaTeX wrapper)
gnuplot-lua-tikz-common.tex (common definitions)
and can be copied to the appropriate places.
lua gnuplot-tikz.lua help
prints the terminal help on stdout and
lua gnuplot-tikz.lua termhelp > gnuplot-tikz.help
generates the version to be included in gnuplot help system.
The usage is quite similar to the other terminals with the difference that
most terminal options are processed by the external Lua script. To see the
list of additional script options just type
gnuplot> set term lua tikz help
# lua gnuplot-tikz.lua
on the command line.
A minimalist gnuplot session (or script) may look like this:
> set term lua tikz # activate the Lua terminal and load "gnuplot.lua"
> set out 'test.tex' # write output to file 'test.tex'
> plot x*x # plot a nice parabola
The generated file `test.tex' can be used by simply adding the line
to your LaTeX document and by adding
to the preamble.
Any comments, suggestions and bug reports are most welcome and can go
to <peter(at)affenbande.org> or the Sourceforge bug and patch trackers.
Peter Hedwig <firstname.lastname@example.org>
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