PPMTOPJXL

NAME

      ppmtopjxl - convert a portable pixmap into an HP PaintJet XL PCL file

SYNOPSIS

      ppmtopjxl [-nopack] [-gamma <n> ] [-presentation] [-dark] [-diffuse]
      [-cluster] [-dither] [-xshift <s> ] [-yshift <s> ] [-xshift <s> ] [-
      yshift <s> ] [-xsize|-width|-xscale <s> ] [-ysize|-height|-yscale <s> ]
      [ppmfile]

DESCRIPTION

      Reads a portable pixmap as input.  Produces a PCL file suitable for
      printing on an HP PaintJet XL printer as output.
      The generated file is not suitable for printing on a normal PrintJet
      printer.  The -nopack option generates a file which does not use the
      normal TIFF 4.0 compression method. This file might be printable on a
      normal PaintJet printer (not an XL).
      The -gamma option sets the gamma correction for the image. The useful
      range for the PaintJet XL is approximately 0.6 to 1.5.
      The rendering algorithm used for images can be altered with the -
      dither, -cluster, and -diffuse options. These options select ordered
      dithering, clustered ordered dithering, or error diffusion
      respectively.  The -dark option can be used to enhance images with a
      dark background when they are reduced in size.  The -presentation
      option turns on presentation mode, in which two passes are made over
      the paper to increase ink density. This should be used only for images
      where quality is critical.
      The image can be resized by setting the -xsize and -ysize options. The
      parameter to either of these options is interpreted as the number of
      dots to set the width or height to, but an optional dimension of `pt'
      (points), `dp' (decipoints), `in' (inches), or `cm' (centimetres) may
      be appended.  If only one dimension is specified, the other will be
      scaled appropriately.
      The options -width and -height are synonyms of -xsize and -ysize.
      The -xscale and -yscale options can alternatively be used to scale the
      image by a simple factor.
      The image can be shifted on the page by using the -xshift and -yshift
      options. These move the image the specified dimensions right and down.

SEE ALSO

      ppm(5)

AUTHOR

      Angus Duggan