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  ⟨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)