On Sat, Feb 12, 2011 at 5:11 AM, Milton Cezar Ribeiro
miltinho.astrona...@gmail.com wrote:
Dear all,
I have a raster map where each patch (i.e. forest fragment) have different
ID.
I need to estimate the perimeter per patch, but R.le.patch can't do the job.
Have you tried a vector approach?
Hi Markus,
Thanks for the reply. In fact a vector-based should solve this.
But, unfortulatelly, as I am working with a very large raster map
(48,000 x 60,000 pixels; 250,000 clumps), and GRASS fail when
I try r.to.vect under Windows/Vista. Is there any other options
of convert large raster maps
On Sat, Feb 12, 2011 at 11:58 AM, Milton Cezar Ribeiro
miltinho.astrona...@gmail.com wrote:
Hi Markus,
Thanks for the reply. In fact a vector-based should solve this.
But, unfortulatelly, as I am working with a very large raster map
(48,000 x 60,000 pixels; 250,000 clumps), and GRASS fail
Hi Markus,
I will try that. The GRASS_VECTOR_LOWMEM=1 works only for G7?
best
milton
2011/2/12 Markus Metz markus.metz.gisw...@googlemail.com
On Sat, Feb 12, 2011 at 11:58 AM, Milton Cezar Ribeiro
miltinho.astrona...@gmail.com wrote:
Hi Markus,
Thanks for the reply. In fact a
Milton Cezar Ribeiro:
Hi Markus,
I will try that. The GRASS_VECTOR_LOWMEM=1 works only for G7?
Yes, only for G7. Also Large File Support for wingrass is only available in G7.
Markus Metz:
On Sat, Feb 12, 2011 at 11:58 AM, Milton Cezar Ribeiro
miltinho.astrona...@gmail.com wrote:
Hi
Milton:
But, unfortulatelly, as I am working with a very large raster
map (48,000 x 60,000 pixels; 250,000 clumps), and GRASS fail
when I try r.to.vect under Windows/Vista.
...
I will try that. The GRASS_VECTOR_LOWMEM=1 works only
for G7?
Markus Metz wrote:
Yes, only for G7. Also Large File
Glad you found a fix. I'll have to remember this in case I have to venture
north into MI.
It would be interesting to import the tifg into a new location in GRASS letting
the image set the projection, and then reproject it from there into your
project location with r.proj. But I guess since
