tochunky(1)

NAME
     tochunky - Convert an SGI image to CHUNKY printer data format

SYNOPSIS
     tochunky     [ -P printer_database ]
                  [ -a xsize ysize ]
                  [ -l xdpi ydpi ]
                  [ -d K, CMY, or CMYK ]
                  [ -z zoomfactor ] inimage.rgb

DESCRIPTION
     tochunky converts an SGI image file into SGI CHUNKY data format, for use
     by CHUNKY format printer drivers.  However, the SGI CHUNKY chunky format
     has been superseded by Stream TIFF (STIFF).  Conversions from SGI Image
     File format to STIFF are most efficiently accomplished by converting from
     SGI Image File format to PostScript using the program sgi2ps and then
     converting the PostScript to STIFF using the program psrip.

     New development work should not use the SGI CHUNKY format.

PROGRAM USAGE
     By default, tochunky assumes a zoomfactor of 1.0, and thus scales the
     image to be printed as large as possible without cropping.

     The -P option is followed by the full path to the printer's POD this
     option is given all settings except the zoomfactor are filled in from the
     config file, and need not be given unless the user wishes to override the
     settings in the POD database.

     The -a option specifies the printer's imageable area in dots in the
     horizontal (xsize) and vertical (ysize) directions.  These values are
     normally derived from the POD database, which is kept up to date with the
     currently loaded paper size.

     The -l option specifies the printer resolution in dots per inch in the
     horizontal (xdpi) and vertical (ydpi) directions.  These values are
     normally derived from the POD database, which is kept up to date with the
     current printer configuration.

     The -d option specifies the printer data format, one of the following: K
     (black only), CMY (CMY only), or CMYK (CMYK data).  The data format is
     normally derived from the POD database, which is kept up to date with the
     current printer configuration.

     If the -z option is given, then the image will be resized based on
     zoomfactor.  Zoomfactor is a floating point value between 0.0 and 1.0,
     inclusive.  The zoomfactor argument specifies a relative scaling: the
     scaling is proportional to the area of page which should be filled, and
     zoomfactor may be considered to be a percentage fill argument when its
     value is between 0.01 and 1.00.  However, -z 0.0 is the exception to the
     rule: -z 0.0 indicates that tochunky should not zoom the image, but
     should print exactly one printer dot per image pixel.
     The resultant image is never cropped and is always centered on the page.

SEE ALSO
     sgi2ps(1), psrip(1)

KNOWN BUGS
     1.   The -P option currently requires a full pathname to the printer's
          require just the printer name.

     2.   The -z option does not currently rotate the image if the image could
          be printed larger when printed 90 degrees rotated.

     3.   Since the -p ppi "pixels per inch" option is not implemented,
          setting the -l option will have no effect on the output image.

FILES
     /usr/lib/print/tochunky    Program file

TRADEMARKS
     PostScript is a registered trademark of Adobe Systems, Inc.

WARNING
     This program has been obsoleted. All new development should be done with
     sgi2ps and psrip and should use the STIFF file format.  The tochunky
     program is provided for compatibility with previous releases of the
     Impressario product and may be removed from future releases.