Name

       eqn2graph - convert an eqn equation into a cropped image

Synopsis

       eqn2graph [-format output-format] [convert-argument ...]

       eqn2graph --help

       eqn2graph -v
       eqn2graph --version

Description

       eqn2graph  reads  a one-line eqn(1) equation from the standard input and writes an image file, by default
       in Portable Network Graphics (PNG) format, to the standard output.

       The input EQN code should not be preceded by the .EQ macro that  normally  precedes  it  within  groff(1)
       macros; nor do you need to have dollar-sign or other delimiters around the equation.

       Arguments not recognized by eqn2graph 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.

       -format output-format
              Write the image in output-format, which must be understood by convert; the default is PNG.

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

       eqn2graph was written by Eric S. Raymond, based on a recipe for pic2graph(1), by W. Richard Stevens.

See also

       pic2graph(1), grap2graph(1), eqn(1), groff(1), convert(1)

groff 1.23.0                                      31 March 2024                                     eqn2graph(1)