pnmtotiff(1)            UNIX System V(13 January 1991)             pnmtotiff(1)


NAME
      pnmtotiff - convert a a portable anymap into a TIFF file

SYNOPSIS
      pnmtotiff [-none|-packbits| -lzw|-g3|-g4] [-2d] [-fill] [-predictor n]
      [-msb2lsb|-lsb2msb] [-rowsperstrip n] [pnmfile]

DESCRIPTION
      Reads a portable anymap as input.  Produces a TIFF file as output.

OPTIONS
      By default, pnmtotiff creates a TIFF file with LZW compression.  This is
      your best bet most of the time.  However, some TIFF readers can't deal
      with it.  If you want to try another compression scheme or tweak some of
      the other even more obscure output options, there are a number of flags
      to play with.

      The -none, -packbits, -lzw, -g3, and -g4 options are used to override the
      default and set the compression scheme used in creating the output file.
      The CCITT Group 3 and Group 4 compression algorithms can only be used
      with bilevel data.  The -2d and -fill options are meaningful only with
      Group 3 compression:  -2d requests 2-dimensional encoding, while -fill
      requests that each encoded scanline be zero-filled to a byte boundry.
      The -predictor option is only meaningful with LZW compression: a
      predictor value of 2 causes each scanline of the output image to undergo
      horizontal differencing before it is encoded; a value of 1 forces each
      scanline to be encoded without differencing.

      By default, pnmtotiff creates a TIFF file with msb-to-lsb fill order.
      The -msb2lsb and -lsb2msb options are used to override the default and
      set the fill order used in creating the file.

      The -rowsperstrip option can be used to set the number of rows
      (scanlines) in each strip of data in the output file.  By default, the
      output file has the number of rows per strip set to a value that will
      ensure each strip is no more than 8 kilobytes long.

BUGS
      This program is not self-contained.  To use it you must fetch the TIFF
      Software package listed in the OTHER.SYSTEMS file and configure PBMPLUS
      to use libtiff.  See PBMPLUS's Makefile for details on this
      configuration.

SEE ALSO
      tifftopnm(1), pnm(5)

AUTHOR
      Derived by Jef Poskanzer from ras2tiff.c, which is Copyright (c) 1990 by
      Sun Microsystems, Inc.  Author: Patrick J. Naughton
      (naughton@wind.sun.com).




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