Dear all,<br><br>I have a raster map where each patch (i.e. forest fragment) have different ID.<br>I need to estimate the perimeter per patch, but R.le.patch can't do the job.<br>------------<br>GRASS 6.4> r.le.patch map=fragments sam=w per=p1 siz=s1 out=STATS.txt<br>
<br>PARAMETER CHOICES:<br> MAP: fragments<br> SAMPLE: whole map TRACING: 8 neighbor<br> SIZE MEASURES:<br> mean patch size<br> PERIMETER MEASURES:<br> sum of perims<br>
<br>R.LE.PATCH IS WORKING....;<br><br>ERROR: G_calloc: unable to allocate 24806 * 8 bytes at alloc_cell.c:83<br>------------<br><br>Any hint?<br><br>bests<br><br>milton<br>