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pnmtoddif(1)                General Commands Manual               pnmtoddif(1)

Name
       pnmtoddif - Convert a portable anymap to DDIF format

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

OPTIONS
       resolution x y The  horizontal  and  vertical  resolution of the output
                      image in dots per inch. Defaults to 78 dpi.

       pnmfile        The filename for the image file in pnm format.  If  this
                      argument is omitted, input is read from stdin.

       ddiffile       The  filename  for  the image file to be created in DDIF
                      format.  If this argument is omitted,  the  ddiffile  is
                      written  to  standard output. It can only specified if a
                      pnmfile is also specified.

DESCRIPTION
       pnmtoddif takes a portable anymap from standard input and  converts  it
       into a DDIF image file on standard output or the specified DDIF file.

       pbm  format  (bitmap)  data  is  written as 1 bit DDIF, pgm format data
       (greyscale) as 8 bit greyscale DDIF, and ppm format data is written  as
       8,8,8 bit color DDIF. All DDIF image files are written as 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. PBMPLUS images
       do  not carry this information, hence it has to be externally supplied.
       The default of 78 dpi has the beneficial  property  of  not  causing  a
       resize on most Digital Equipment Corporation color monitors.

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

                                                                  pnmtoddif(1)

Czas wygenerowania: 0.00051 sek.


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