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Pnmtoddif User Manual(0)						 Pnmtoddif User Manual(0)

       pnmtoddif - Convert a PNM image to DDIF format

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

       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.   pnmtod-
       dif  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 causing a
       resize on most Digital Equipment Corporation color monitors.

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

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

	      The filename for the image file to be created in DDIF format.  By default,  pnmtod-
	      dif writes to Standard Output.

       Burkhard    Neidecker-Lutz,    Digital	Equipment   Corporation,   CEC	 Karlsruhe   nei-

netpbm documentation			       2003			 Pnmtoddif User Manual(0)
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