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Pamseq User Manual(0)							    Pamseq User Manual(0)

NAME
       pamseq - generate PAM image of all possible tuple values, in sequence

SYNOPSIS
       pamseq [-tupletype=tupletype] depth maxval

       All  options  can be abbreviated to their shortest unique prefix.  You may use two hyphens
       instead of one to designate an option.  You may use either white space or an  equals  sign
       between an option name and its value.

DESCRIPTION
       This program is part of Netpbm(1)

       pamseq  generates a PAM image of a specified depth and specified maxval that consists of a
       single row.  The row consists of one tuple of every possible value, in order.

       For a depth of one, the order is simple: From 0 to maxval, going from left to right.   For
       higher  depths,	the  highest  numbered	plane goes from 0 to maxval (going left to right)
       while all the other planes have value 0.  Then the sequence repeats except with	the  next
       highest plane set to a value of 1, then 2, etc.

OPTIONS
       -tupletype
	      This  is	the value of the "tuple_type" attribute of the created PAM image.  It can
	      be any string up to 255 characters.

USAGE
       To create a simple ramp of the values 0..255, for input to  various  matrix  calculations,
       try
	 pamseq 1 255
       (Before pamseq existed, pgmramp was often pressed into service for this).

       To create a PPM color map of all the possible colors representable with a maxval of 5, do
	 pamseq 3 5 -tupletype=RGB | pamtopnm

       Again,  with  a	modern	program  based on the Netpbm library, you don't need the pamtopnm
       because a PAM RGB image is equivalent to a PPM image.

       You can use such a color map with pnmremap(1)
	to quantize the colors in an image.  With the maxval of 5 given in the example, you get a
       color map of the set of "web safe" colors as defined by Netscape.  Most web browsers guar-
       antee that they can produce at least these 216 colors (215 plus black).

SEE ALSO
       pnmremap(1) , pamtopnm(1) , pam(1)

HISTORY
       pamseq was added to Netpbm in June 2002.

netpbm documentation			    8 May 2002			    Pamseq User Manual(0)
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