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58 lines
1.9 KiB
Text
58 lines
1.9 KiB
Text
## Files Ending In .dot, .neato, .circo
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Many of the images are generated using dot from the graphviz package. For
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assistance with these files, feel free to contact dave@dtrt.org.
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The following examples generate a .png or .svg file from a .dot file:
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dot -T svg file.dot -o file.svg
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dot -T png file.dot -o file.png
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You can change a .circo or .neato file into a .png or .svg using
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corresponding commands:
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circo -T svg file.circo -o file.svg
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neato -T png file.neato -o file.png
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Notice: Graphviz can be inconsistent across versions. All of the SVG and
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PNG images here were generated using graphviz version 2.26.3
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(20100126.1600) on Debian 7 using the following shell loop:
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fn="fontname=Sans"
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for f in *dot
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do
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dot -N$fn -G$fn -E$fn -o ${f/.dot}.svg -T svg $f
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dot -N$fn -G$fn -E$fn -o ${f/.dot}.png -T png $f
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optipng -o7 ${f/.dot}.png
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done
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For improved compatability between Graphviz versions, files created or
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updated after 6 May 2014 are recommend to include the following code
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near the top of the file:
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edge [ fontname="Sans" ]
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node [ fontname="Sans" ]
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graph [ fontname="Sans" ]
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Also, splines=ortho should not be used in new or updated files until
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Graphviz fixes its post-2.26.3 ortho code.
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## Files Ending In .gnuplot
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Some images are generated using gnuplot. As of this writing, you can
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generate both the SVG and PNG output for any of these files by running
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the following command:
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gnuplot <filename.gnuplot>
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After generating, you should use optipng to reduce the PNG filesize.
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(Reductions here tend to be small, ~10%):
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optipng -o7 <filename.png>
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If your plot has a high sample rate, you can reduce the SVG filesize by
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opening it in Inkscape, ungrouping the graphic, selecting plot lines,
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and using Path->Simplify. Then select all, regroup, and save. Be sure
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to double-check your work---if you simplify text, it becomes unreadable.
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(Reductions here tend to be large, I've seen ~80%.)
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