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NAME
eqn2graph - convert an EQN equation into a cropped image
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SYNOPSIS
eqn2graph
[
-unsafe
]
[
I -format fmt
]
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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 a black-on-white graphic clipped to the
smallest possible bounding 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
eqn(1),
groff(1),
and the ImageMagick
convert(1)
program.
These programs must be installed on your system and accessible on your
$PATH for
eqn2graph to work.
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OPTIONS
-unsafe
Run
groff(1)
in the `unsafe' mode enabling the PIC macro
sh
to execute arbitrary commands.
The default is to forbid this.
I -format fmt
Specify an output format; the default is PNG (Portable Network Graphics).
Any format that
convert(1)
can emit is supported.
Command-line switches and arguments not listed above are passed to
convert(1).
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FILES
/usr/share/groff/1.18.1/tmac/eqnrc
The
eqn(1)
initialization file.
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SEE ALSO
AUTHOR
Eric S. Raymond <esr@thyrsus.com>.
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