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CentOS 7.0 - man page for eqn2graph (centos section 1)

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EQN2GRAPH(1)									     EQN2GRAPH(1)

NAME
       eqn2graph - convert an EQN equation into a cropped image

SYNOPSIS
       eqn2graph [ -unsafe ] [ -format fmt ]

DESCRIPTION
       Reads  an EQN equation (one line) as input; produces an image file (by default in Portable
       Network Graphics format) suitable for the Web as output.

       Your input EQN code should not have the .EQ/.EN preamble that that  normally  precedes  it
       within groff(1) macros; nor do you need to have dollar-sign or other delimiters around the
       equation.

       The output image will be clipped to the smallest possible bounding box that  contains  all
       the  black  pixels.   Older  versions of convert(1) will produce a black-on-white graphic;
       newer ones may produce a black-on-transparent graphic.  By specifying command-line options
       to be passed to convert(1) you can give it a border, force the background transparent, set
       the image's pixel density, or perform other useful transformations.

       This program uses eqn(1), groff(1), and the ImageMagick convert(1)  program.   These  pro-
       grams must be installed on your system and accessible on your $PATH for eqn2graph to work.

OPTIONS
       -unsafe
	      Run  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.

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

FILES
       /usr/share/groff/1.22.2/tmac/eqnrc  The eqn(1) initialization file.

ENVIRONMENT
       GROFF_TMPDIR
	      The  directory  in  which  temporary  files  will  be  created.  If this is not set
	      eqn2graph searches the environment variables TMPDIR, TMP, and TEMP (in that order).
	      Otherwise, temporary files will be created in /tmp.

BUGS
       Due  to	changes in the behavior of ImageMagick convert(1) that are both forward and back-
       ward-incompatible, mismatches between your eqn2graph and convert(1) versions  may  produce
       zero-sized or untrimmed output images.  For this version of eqn2graph you will need a ver-
       sion of convert(1) that supports the  -trim  option;  older  versions  of  eqn2graph  used
       -crop 0x0, which no longer has trimming behavior.

SEE ALSO
       pic2graph(1), grap2graph(1), eqn(1), groff(1), gs(1), convert(1).

AUTHOR
       Eric S. Raymond <esr@thyrsus.com>.

Groff Version 1.22.2			 7 February 2013			     EQN2GRAPH(1)
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