applymap man page on DigitalUNIX

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APPLYMAP(1)							   APPLYMAP(1)

NAME
       applymap - Apply the color map in an RLE file to the pixel data

SYNOPSIS
       applymap [ -l ] [ -o outfile ] [ infile ]

DESCRIPTION
       This  program  takes  the  color map in an RLE(5) file and modifies the
       pixel values by applying the color map to them.	If there is more  than
       one  color  channel  in the input file, the color map in the input file
       should have the same number of channels.	 If the input file has a  sin‐
       gle  color  channel, the output file will have the same number of color
       channels as the color map.

       Each pixel in the input file is mapped as follows:  For a multi-channel
       input  file, a pixel in channel i is mapped as map[i][pixel] >> 8, pro‐
       ducing a pixel in output channel i.  The right shift takes the  16  bit
       color  map  value  to an 8 bit pixel value.  For a single channel input
       file, to produce a pixel in output channel i is produced from the  cor‐
       responding input pixel value as map[i][pixel] >> 8.

OPTIONS
       -l     This  option  will  cause	 a  linear  (identity) color map to be
	      loaded into the output file.  Otherwise, the  output  file  will
	      have no color map.

       infile The  input will be read from this file, otherwise, input will be
	      taken from stdin.

       -o outfile
	      If specified, output will be written to this file, otherwise  it
	      will go to stdout.

SEE ALSO
       rleldmap(1), urt(1), RLE(5).

AUTHOR
       Spencer W. Thomas, University of Utah

BUGS
       If  the image data and color map channels in the input file do not con‐
       form to the restriction stated above (N→N or 1→N) the program will most
       likely core dump.

4th Berkeley Distribution	 Nov 12, 1986			   APPLYMAP(1)
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