NAME¶
pic2graph - convert a PIC diagram into a cropped image
SYNOPSIS¶
pic2graph |
[-unsafe]
[-format output-format]
[-eqn delimiters]
[convert-arguments] |
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 smallest possible bounding box that contains all the black
pixels.
OPTIONS¶
- -eqn delimiters
- Use delimiters as the opening and closing characters that delimit
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, based on a recipe by W. Richard Stevens.
