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 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.
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 format that convert(1)
can emit is supported.
Command-line switches and arguments not listed above are passed
to convert(1).
FILES
u+2n
- /usr/share/groff/1.18.1.1/tmac/eqnrc The eqn(1)
initialization file.
SEE ALSO
eqn(1),
groff(1),
gs(1),
convert(1).
AUTHOR
Eric S. Raymond <esr@thyrsus.com>.