view examples/celldemo.cc @ 17118:c97a26408ee0

Implement PixelRegion option for imread(). * imread.m: document new option. * private/__imread__.m: parse new option and set defaults. * __magick_read__.cc (calculate region): new option to calculate the region to be read, shifts in memory required, and output image size. (read_indexed_images, read_images): implement reading of only specific regions of an image. (__magick_read__): get octave_scalar_map at start for simplicity.
author Carnë Draug <carandraug@octave.org>
date Wed, 31 Jul 2013 21:28:48 +0100
parents be41c30bcb44
children
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#include <octave/oct.h>
#include <octave/Cell.h>

DEFUN_DLD (celldemo, args, , "Cell Demo")
{
  octave_value_list retval;
  int nargin = args.length ();

  if (nargin != 1)
    print_usage ();
  else
    {
      Cell c = args(0).cell_value ();
      if (! error_state)
        for (octave_idx_type i = 0; i < c.numel (); i++)
          {
            retval(i) = c(i);          // using operator syntax
            //retval(i) = c.elem (i);  // using method syntax
          }
    }

  return retval;
}