pamchannel

Pamchannel User Manual(0)                            Pamchannel User Manual(0)



pamchannel - extract channels from a PAM image

pamchannel [-infile infile] [-tupletype tupletype] [channum ...]

       Minimum  unique abbreviation of option is acceptable.  You may use dou-
       ble hyphens instead of single hyphen to denote options.   You  may  use
       white space in place of the equals sign to separate an option name from
       its value.


       This program is part of Netpbm(1).

       pamchannel reads a PAM or PNM image as input and produces a  PAM  image
       as  output, consisting of the indicated channels (planes) of the input.

       The output is the same dimensions as the input, except that  the  depth
       is  the  number  of  channum arguments you supply.  The tuple type is a
       null string unless you specify the -tupletype option.

       pamstack does the opposite of pamchannel:  It takes multiple PAM or PNM
       images  as  input  and  stacks  their  planes  (channels) on top of one
       another to yield a single PAM.





       -infile infile
              This specifies the input file, which defaults to Standard Input.
              You may specify - to select Standard Input explicitly.

              This  is a little unconventional for Netpbm programs, which usu-
              ally have the input file specification as an argument.  For pam-
              channel, the arguments are channel numbers.


       -tupletype tupletype
              This specified the tuple type name to be recorded in the output.
              You may use any string up to 255 characters.  Some programs rec-
              ognize  some  names.  If you omit this option, the default tuple
              type name is null.


              pam(1) pamstack(1)



netpbm documentation               May 2002          Pamchannel User Manual(0)