pbmtoplot
converts PBM bitmaps to Unix plotformat
TLDR
Convert PBM to Unix plot format
$ pbmtoplot [input.pbm] > [output.plot]
SYNOPSIS
pbmtoplot [file]
DESCRIPTION
pbmtoplot converts PBM bitmaps to Unix plot(5) format. Plot format was used for device-independent graphics output. Part of Netpbm toolkit.
SEE ALSO
plotfont(1), pbmtoascii(1)