GRAP2GRAPH(1) manual page
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grap2graph - convert a grap diagram into a cropped bitmap image
grap2graph [ -unsafe ] [ -resolution M|MxN ] [ -format fmt ]
Reads
a grap program as input; produces an image file (by default in Portable
Network Graphics format) suitable for the Web as output. For a description
of the grap language, see grap(1)
.
Your graph specification should not be
wrapped with the .G1 and .G2 macros that normally guard it within groff(1)
macros.
The output image will be a black-on-white graphic clipped to the smallest
possible bounding box that contains all the black pixels. By specifying
command-line options to be passed to convert(1)
you can give it a border,
set the background transparent, set the image’s pixel density, or perform
other useful transformations.
This program uses grap(1)
, pic(1)
, groff(1)
,
and the ImageMagick convert(1)
program. These programs must be installed
on your system and accessible on your $PATH for grap2graph to work.
- -unsafe
- Run pic(1)
and groff(1)
in the ‘unsafe’ mode enabling the PIC macro sh to
execute arbitrary commands. The default is to forbid this.
- -format fmt
- Specify
an output format; the default is PNG (Portable Network Graphics). Any format
that convert(1)
can emit is supported.
Command-line switches and arguments
not listed above are passed to convert(1)
.
- GROFF_TMPDIR
- The
directory in which temporary files will be created. If this is not set grap2graph
searches the environment variables TMPDIR, TMP, and TEMP (in that order).
Otherwise, temporary files will be created in /tmp.
pic2graph(1)
,
eqn2graph(1)
, pic(1)
, groff(1)
, gs(1)
, convert(1)
.
Eric S. Raymond
<esr@thyrsus.com>
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