PIC2GRAPH(1) General Commands Manual PIC2GRAPH(1)
NAME
pic2graph - convert a PIC diagram into a cropped image
SYNOPSIS
pic2graph [-unsafe] [-format output-format] [-eqn delimiters] [convert-
arguments]
pic2graph --help
pic2graph -v
pic2graph --version
DESCRIPTION
pic2graph reads a pic(1) program from the standard input and writes an
image file, by default in Portable Network Graphics (PNG) format, to
the standard output. It furthermore translates eqn(1) constructs, so
it can be used for generating images of mathematical formulae.
The input PIC code should not be wrapped with the .PS and .PE macros
that normally guard it within groff(1) documents.
Arguments not recognized by pic2graph are passed to the ImageMagick or
GraphicsMagick program convert(1). By specifying these, you can give
your image a border, set the image's pixel density, or perform other
useful transformations.
The output image is clipped using convert's -trim option to the small-
est possible bounding box that contains all the black pixels.
OPTIONS
-eqn delimiters
Use delimiters as the opening and closing characters that de-
limit eqn directives; the default is “$$”. The option argument
delimiters should be a two-character string, but an empty string
("") is accepted as a directive to disable eqn processing.
-format output-format
Write the image in output-format, which must be understood by
convert; the default is PNG.
--help Display a usage message and exit.
-unsafe
Run groff in unsafe mode, enabling the PIC command sh to execute
arbitrary Unix shell commands. The groff default is to forbid
this.
-v
--version
Display version information and exit.
ENVIRONMENT
GROFF_TMPDIR
TMPDIR
TMP
TEMP These environment variables are searched in the given order to
determine the directory where temporary files will be created.
If none are set, /tmp is used.
AUTHORS
pic2graph was written by Eric S. Raymond ⟨esr@thyrsus.com⟩, based on a
recipe by W. Richard Stevens.
SEE ALSO
W. Richard Stevens, Turning PIC into HTML ⟨http://www.kohala.com/start/
troff/pic2html.html⟩
eqn2graph(1), grap2graph(1), pic(1), eqn(1), groff(1), convert(1)
groff 1.22.4 7 March 2023 PIC2GRAPH(1)
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