NAME

       eqn2graph - convert an EQN equation into a cropped image

SYNOPSIS

       eqn2graph [-format output-format] [convert-arguments]

       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

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

       --help Display a usage message and exit.

       -v
       --version
              Display version information and exit.

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  ⟨esr@thyrsus.com⟩,  based  on a recipe for
       pic2graph(1), by W. Richard Stevens.

SEE ALSO

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