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RedHat 9 (Linux i386) - man page for pstopnm (redhat section 1)

pstopnm(1)			     General Commands Manual			       pstopnm(1)

NAME
       pstopnm - convert a PostScript file into a portable anymap

SYNOPSIS
       pstopnm	[-stdout]  [-forceplain]  [-help]  [-llx  s]  [-lly  s]  [-landscape] [-portrait]
       [-nocrop] [-pbm |-pgm |-ppm] [-urx s] [-ury s] [-verbose] [-xborder n] [-xmax  n]  [-xsize
       f] [-yborder f] [-ymax n] [-ysize n] psfile[.ps]

DESCRIPTION
       Reads  a  PostScript file as input.  Produces PBM, PGM, or PPM files as output.	This pro-
       gram simply uses GhostScript to render a PostScript file with its PNM device drivers.   If
       you  don't  have  GhostScript installed (invoked by a gs command), or the version you have
       installed was not built with the relevant PNM device drivers, pstopnm will fail.  You  can
       see  if you have the proper environment by issuing the command gs --help .  If it responds
       and lists under "Available Devices" pbm, pbmraw, pgm, pgmraw, pnm, pnmraw, ppm, or ppmraw,
       you're in business.

       pstopnm	does  not  use	the  Netpbm libraries to generate the output files, so may not be
       entirely consistent with most Netpbm programs.

       psfile[.ps] is the name of the input file.  .pstopnm will add the ps to	the  end  of  the
       name you specify if no file exists by the exact name you specify, but one with added does.
       Use - to indicate Standard Input.

       If you use the -stdout option, pstopnm outputs images of all the pages  as  a  multi-image
       file  to  Standard Output.  Otherwise, pstopnm creates one file for each page in the Post-
       script document.  The files are named as follows: If the input file  is	named  psfile.ps,
       the  name  of the files will be psfile001.ppm, psfile002.ppm, etc.  The filetype suffix is
       .ppm, .pgm, or .pbm, depending on which kind of output you  choose  with  your  invocation
       options.   If  the input file name does not end in .ps, the whole file name is used in the
       output file name.  For example, if the input file is named  psfile.old,	the  output  file
       name is psfile.old001.ppm, etc.

       Note  that the output file selection is inconsistent with most Netpbm programs, because it
       does not default to Standard Output.  This is for historical reasons, based  on	the  fact
       that the Netpbm formats did not always provide for a sequence of images in a single file.

       Each  output  file  contains  the image of a rectangular part of the page to which it per-
       tains.  The selected area will always be centered in the output file, and may have borders
       around  it.   The  image area to be extracted from the PostScript file and rendered into a
       portable anymap is defined by four numbers, the lower left corner and the upper right cor-
       ner  x and y coordinates.  These coordinates are usually specified by the BoundingBox com-
       ment in the PostScript file header, but they can be overridden by the user  by  specifying
       one or more of the following options: -llx, -lly, -urx, and -ury.  The presence and thick-
       ness of a border to be left around the image area is controlled by the use of the  options
       -xborder  and -yborder.	If pstopnm does not find BoundingBox parameters in the input, and
       you don't specify image area coordinates on the command line, pstopnm uses default values.
       If your input is from Standard Input, pstopnm does not use the BoundingBox parameters (due
       to the technical difficulty of extracting that information and still feeding the  file  to
       Ghostscript),  so  you  either  have  to  specify  the  image area coordinates or take the
       default.

       Unless you specify both output file width and height, via the -xsize and  -ysize  options,
       pstopnm maps the document into the output image by preserving its aspect ratio.

OPTIONS
       -forceplain
	      forces  the  output  file  to  be  in plain (text) format.  Otherwise, it is in raw
	      (binary) format.	See pbm(1), etc.

       -llx bx
	      selects bx as the lower left corner x coordinate (in inches).

       -lly by
	      selects by as the lower left corner y coordinate (in inches).

       -landscape
	      renders the image in landscape mode.

       -portrait
	      renders the image in portrait mode.

       -nocrop
	      does not crop the output image dimensions to match the PostScript image area dimen-
	      sions.

       -pbm -pgm -ppm
	      selects  the format of the output file.  By default, all files are rendered as por-
	      table pixmaps (ppm format).

       -stdout
	      causes output to go to Standard Output instead of to regular files,  one	per  page
	      (see  description of output files above).  Use pnmsplit to extract individual pages
	      from Standard Output.

       -urx tx
	      selects tx as the upper right corner x coordinate (in inches).

       -ury ty
	      selects ty as the upper right corner y coordinate (in inches).

       -verbose
	      prints processing information to stdout.

       -xborder frac
	      specifies that the border width along the Y axis should be frac times the  document
	      width  as specified by the bounding box comment in the PostScript file header.  The
	      default value is 0.1.

       -xmax xs
	      specifies that the maximum output image width should have a size less or	equal  to
	      xs pixels (default: 612).

       -xsize xsize
	      specifies that the output image width must be exactly xs pixels.

       -yborder frac
	      specifies  that the border width along the X axis should be frac times the document
	      width as specified by the bounding box comment in the PostScript file header.   The
	      default value is 0.1.

       -ymax ys
	      specifies  that the maximum output image height should have a size less or equal to
	      ys pixels (default: 792).

       -ysize ys
	      specifies that the output image height must be exactly ys pixels.

BUGS
       The program will produce incorrect results with PostScript files that initialize the  cur-
       rent  transformation  matrix.  In these cases, page translation and rotation will not have
       any effect.  To render these files, probably the best bet is to use the following options:

	  pstopnm -xborder 0 -yborder 0 -portrait -nocrop file.ps

       Additional options may be needed if the document is supposed to be rendered  on	a  medium
       different from letter-size paper.

SEE ALSO
       gs(1), pstofits(1), pnmtops(1), psidtopgm(1), pbmtolps(1), pbmtoepsi(1), pnmsplit(1)

COPYRIGHT
       Copyright (c) 1992 Smithsonian Astrophysical Observatory
       PostScript is a Trademark of Adobe Systems Incorporated.

AUTHOR
       Alberto Accomazzi, WIPL, Center for Astrophysics.

					   28 June 2000 			       pstopnm(1)


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