Manual: pnmtoddif

Pnmtoddif User Manual(1)			   General Commands Manual			    Pnmtoddif User Manual(1)

NAME
       pnmtoddif - Convert a PNM image to DDIF format

SYNOPSIS
       pnmtoddif [-resolution x y] [pnmfile [ddiffile]]

DESCRIPTION
       This program is part of Netpbm(1).

       pnmtoddif takes a PNM image and converts it into a DDIF image file.

       pnmtoddif  writes  PBM  format (bitmap) data as a 1 bit DDIF, PGM format data (grayscale) as an 8 bit grayscale DDIF,
       and PPM format (color) data as an 8,8,8 bit color DDIF.	pnmtoddif writes any DDIF image file uncompressed.  The data
       plane organization is interleaved by pixel.

       In addition to the number of pixels in the width and height dimension, DDIF images also carry information  about	 the
       size  that the image should have, that is, the physical space that a pixel occupies.  Netpbm images do not carry this
       information, hence you have to supply it externally.  The default of 78 dpi has the beneficial property of not  caus‐
       ing a resize on most Digital Equipment Corporation color monitors.

OPTIONS
       In addition to the options common to all programs based on libnetpbm (most notably -quiet, see  Common Options ), pn‐
       mtoddif recognizes the following command line option:

       -resolution x y
	      The horizontal and vertical resolution of the output image in dots per inch.  Default is 78 dpi.

ARGUMENTS
       pnmfile
	      The filename for the image file in pnm format.  Default is to read from Standard Input.

       ddiffile
	      The  filename  for the image file to be created in DDIF format.  By default, pnmtoddif writes to Standard Out‐
	      put.

SEE ALSO
       pnm(1)

AUTHOR
       Burkhard Neidecker-Lutz, Digital Equipment Corporation, CEC Karlsruhe neideck@nestvx.enet.dec.com

DOCUMENT SOURCE
       This manual page was generated by the Netpbm tool 'makeman' from HTML source.  The master documentation is at

	      http://netpbm.sourceforge.net/doc/pnmtoddif.html

netpbm documentation					    2003				    Pnmtoddif User Manual(1)