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  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 ⟨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)