Updated: 23 October 2005
   Table Of Contents


   pamsplit  - split a multi-image PNM/PAM file into single-image


   pamsplit [netpbmfile[ output_file_pattern]] [-padname=n]

   Minimum unique abbreviation of option is acceptable.  You  may
use double
   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.

   pamsplit  reads  a  PNM or PAM stream as input. It copies each
image in the
   input into a separate file, in the same format.

   netpbmfile is the file specification of the input file,  or  -
to indicate
   Standard Input. The default is Standard Input.

   output_file_pattern  tells how to name the output files. It is
the file
   specification of the output file, except that  the  first  oc-
curence of "%d" in
   it  is replaced by the image sequence number in unpadded ASCII
decimal, with
   the sequence starting at 0. If there is no "%d"  in  the  pat-
tern, pamsplit

   The default output file pattern is "image%d".

   The  -padname option specifies to how many characters you want
the image
   sequence number in the output file name  padded  with  zeroes.
pamsplit adds
   leading  zeroes  to  the image sequence number to get up to at
least that
   number of characters. This is just the number of characters in
the sequence
   number  part  of  the  name.  For  example, pamsplit - output-
file%d.ppm -padname=3
   would  yield  output  filenames   outputfile000.ppm,   output-
file001.ppm, etc.

   The default is no padding (equivalent to -padname=0.

   The  -padname  option was new in Netpbm 10.23 (July 2004). Be-
fore that, there
   was never any padding.

   Note that to do the reverse operation (combining multiple sin-
   Netpbm  files  into  a  multi-image  one), there is no special
Netpbm program.
   Just use cat.

   If you just want to find out basic information about  the  im-
ages in a stream,
   you can use pamfile on the stream.

   To  extract  images from a stream and generate a single stream
   them, use pampick.


   pamfile, pampick, pnm, pam, cat man page

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