Name

       pic2graph - convert a pic diagram into a cropped image

Synopsis

       pic2graph [-unsafe] [-format output-format] [-eqn delimiters] [convert-argument ...]

       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/.PF  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

       --help displays a usage message, while -v and --version show version information; all exit
       afterward.

       -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.

       -unsafe
              Run  groff  in  unsafe  mode, enabling the PIC command sh to execute arbitrary Unix
              shell commands.  The groff default is to forbid this.

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)