Pamdice User Manual(1) General Commands Manual Pamdice User Manual(1)
NAME
pamdice - slice a Netpbm image into many horizontally and/or vertically
EXAMPLE
$ pamdice myimage.ppm -outstem=myimage_part -width=10 -height=8
$ pamundice myimage_part_%1d_%1a.ppm -across=10 -down=8 >myimage.ppm
$ pamdice myimage.ppm -outstem=myimage_part -height=12 -voverlap=9
SYNOPSIS
pamdice
-outstem=filenamestem
[-width=width]
[-height=height]
[-hoverlap=hoverlap]
[-voverlap=voverlap]
[-verbose]
[filename]
You can use the minimum unique abbreviation of the options. You can
use two hyphens instead of one. You can separate an option name from
its value with white space instead of an equals sign.
DESCRIPTION
This program is part of Netpbm(1).
pamdice reads a PAM, PBM, PGM, or PPM image as input and splits it hor-
izontally and/or vertically into equal size pieces and writes them into
separate files as the same kind of image. You can optionally make the
pieces overlap.
See the -outstem option for information on naming of the output files.
The -width and -height options determine the size of the output pieces.
pamundice can rejoin the images. For finer control, you can also use
pnmcat.
One use for this is to make pieces that take less computer resources
than the whole image to process. For example, you might have an image
so large that an image editor can't read it all into memory or pro-
cesses it very slowly. With pamdice, you can split it into smaller
pieces, edit one at a time, and then reassemble them.
Another use for this is to print a large image in small printer-sized
pieces that you can glue together. ppmglobe does a similar thing; it
lets you glue the pieces together into a sphere.
If you want to cut pieces from an image individually, not in a regular
grid, use pamcut.
OPTIONS
In addition to the options common to all programs based on libnetpbm
(most notably -quiet, see
Common Options ⟨index.html#commonoptions⟩ ), pamdice recognizes the
following command line options:
-outstem=filenamestem
This option determines the names of the output files. Each out-
put file is named filenamestem_y_x.type where filenamestem is
the value of the -outstem option, x and y are the horizontal and
vertical locations, respectively, in the input image of the out-
put image, zero being the leftmost and top, and type is .pbm,
.pgm, .ppm, or .pam, depending on the type of image.
-width=width
gives the width in pixels of the output images. The rightmost
pieces are smaller than this if the input image is not a multi-
ple of width pixels wide.
-height=height
gives the height in pixels of the output images. The bottom
pieces are smaller than this if the input image is not a multi-
ple of height pixels high.
-hoverlap=hoverlap
gives the horizontal overlap in pixels between output images.
Each image in a row will overlap the previous one by hoverlap
pixels. By default, there is no overlap.
This option was new in Netpbm 10.23 (July 2004).
-voverlap=voverlap
gives the vertical overlap in pixels between output images.
Each row of images will overlap the previous row by voverlap
pixels. By default, there is no overlap.
This option was new in Netpbm 10.23 (July 2004).
-verbose
Print information about the processing to Standard Error.
HISTORY
pamdice was new in Netpbm 9.25 (March 2002).
Before Netpbm 10.29 (August 2005), there was a limit of 100 slices in
each direction.
SEE ALSO
pamundice(1), pamcut(1), pnmcat(1), pgmslice(1), ppmglobe(1) pnm(1)
pam(1)
DOCUMENT SOURCE
This manual page was generated by the Netpbm tool 'makeman' from HTML
source. The master documentation is at
http://netpbm.sourceforge.net/doc/pamdice.html
netpbm documentation 01 April 2007 Pamdice User Manual(1)
Generated by dwww version 1.15 on Sat Jun 29 02:04:49 CEST 2024.