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OpenDarwin 7.2.1 - man page for pic2graph (opendarwin section 1)

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PIC2GRAPH(1)									     PIC2GRAPH(1)

NAME
       pic2graph - convert a PIC diagram into a cropped image

SYNOPSIS
       pic2graph [ -unsafe ] [ -format fmt ] [ -eqn delim ]

DESCRIPTION
       Reads  a  PIC  program  as  input;  produces an image file (by default in Portable Network
       Graphics format) suitable for the Web as output.  Also translates eqn(1) constructs, so it
       can be used for generating images of mathematical formulae.

       PIC is a rather expressive graphics minilanguage suitable for producing box-and-arrow dia-
       grams of the kind frequently used in technical papers and textbooks.  The language is suf-
       ficiently  flexible  to be quite useful for state charts, Petri-net diagrams, flow charts,
       simple circuit schematics, jumper layouts,  and	other  kinds  of  illustration	involving
       repetitive  uses of simple geometric forms and splines.	Because PIC descriptions are pro-
       cedural and object-based, they are both compact and easy to modify.

       The PIC language is fully documented in "Making Pictures With GNU PIC", a  document  which
       is part of the groff(1) distribution.

       Your  input PIC code should not be wrapped with the .PS and .PE macros that normally guard
       it within groff(1) macros.

       The output image will be a black-on-white graphic clipped to the smallest possible  bound-
       ing  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 pic(1), eqn(1), groff(1), gs(1), and the ImageMagick convert(1) program.
       These programs must be installed on your system and accessible on your $PATH for pic2graph
       to work.

OPTIONS
       -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 for-
	      mat that convert(1) can emit is supported.

       -eqn delim
	      Change  the  fencepost  characters  that	delimit  eqn(1)  directives  ($ and $, by
	      default).  This option requires an argument, but an empty string is accepted  as	a
	      directive to disable eqn(1) processing.

       Command-line switches and arguments not listed above are passed to convert(1).

FILES
       /usr/share/groff/1.18.1/tmac/eqnrc  The eqn(1) initialization file.

SEE ALSO
       eqn2graph(1), pic(1), eqn(1), groff(1), gs(1), convert(1).

AUTHOR
       Eric S. Raymond <esr@thyrsus.com>, based on a recipe by W. Richard Stevens.

Groff Version 1.18.1			    Nov  2003				     PIC2GRAPH(1)
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