pnmtotiff(1)							  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  compres‐
       sion:  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 (scan‐
       lines) in each strip of data in the output file.	 By default, the  out‐
       put  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  configura‐
       tion.

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).

				13 January 1991			  pnmtotiff(1)

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