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pbmtoascii.1
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.TH pbmtoascii 1 "20 March 1992"
.SH NAME
pbmtoascii - convert a portable bitmap into ASCII graphics
.SH SYNOPSIS
.B pbmtoascii
.RB [ -1x2 | -2x4 ]
.RI [ pbmfile ]
.SH DESCRIPTION
Reads a portable bitmap as input.
Produces a somewhat crude ASCII graphic as output.
.PP
Note that there is no asciitopbm tool - this transformation is one-way.
.SH OPTIONS
The
.B -1x2
and
.B -2x4
flags give you two alternate ways for the bits to get mapped to characters.
With
.BR 1x2 ,
the default, each character represents a group of 1 bit across by 2 bits down.
With
.BR -2x4 ,
each character represents 2 bits across by 4 bits down.
With the 1x2 mode you can see the individual bits, so it's useful for
previewing small bitmaps on a non-graphics terminal.
The 2x4 mode lets you display larger bitmaps on a standard 80-column display,
but it obscures bit-level details.
2x4 mode is also good for displaying
graymaps - "pnmscale -width 158 | pgmnorm | pgmtopbm -thresh"
should give good results.
.SH "SEE ALSO"
pbm(5)
.SH AUTHOR
Copyright (C) 1988, 1992 by Jef Poskanzer.
.\" Permission to use, copy, modify, and distribute this software and its
.\" documentation for any purpose and without fee is hereby granted, provided
.\" that the above copyright notice appear in all copies and that both that
.\" copyright notice and this permission notice appear in supporting
.\" documentation. This software is provided "as is" without express or
.\" implied warranty.