#include <stdlib.h>
#include <grass/gis.h>
#include <grass/glocale.h>
#include "globals.h"
#include "local_proto.h"

int analyze_sig (void)
{
  int nbands;

  if (!Region.area.completed)
    {
      G_warning(_("Cannot analyze until region is completed."));
      return(0);
    }

  Menu_msg("");

  /* allocate row buffers and open cell files */
  G_set_window (&Band_cellhd);
  nbands = Refer.nfiles ;
  open_band_files();

  /* gather all points which fall within the polygon */
  /* perform a signature of the area */

  signalflag.interrupt = 0;
  if(!outline()) goto done;
  if (!prepare_signature(nbands)) {
    close_band_files();
    goto done;
  }
  close_band_files();

  show_signature (nbands, 1.5);
  save_signature();

 done:
/* clean up after analysis */
  if (Region.perimeter) 
    {
      G_free (Region.perimeter);
      Region.perimeter = 0;
    }
  erase_region();
  Menu_msg("");

  return (0);
}