[GRASS-user] r.li modules

GRASS GRASS user
1

Dear list,
I’m trying to use GRASS r.li modules to obtain some landscape metrics from a raster map.
I’ve been working with PatchAnalyst, Fragstats or LecoS and I’ve no problems, but I’ve problems to interpret the results obteined with r.li. I don’t get a value for a metric (ex. r.li.patchdensity or r.li patchnum), but a raster map.
I configure the region (r.li.setup) as it’s the GRASS manual, defining the region fon analysis as ‘Whole maplayer’ and the sampling area as ‘Moving Window’.
¿Could someone help me to interpretate the results?

Thank’s in advance.

(attachments)

9k=.jpg
ccgchbhj.jpg
bcabbdfb.jpg
gdbjcfjc.jpg

···

–

Josep Sitjar
Técnico SIG

Tel. (34)972418039
www.sigte.udg.edu

2

Ok, thank's Markus.
We keep in contact,

Best
Josep Sitjar

El 18/01/14 15:20, Markus Neteler escribió:

Hi Josep,

next week I'll try to dedicate some time to r.li.* to check its state!

Please ping me in a week if I didn't respond.

Best
Markus

--
http://gis.cri.fmach.it/neteler/

On Mon, Jan 13, 2014 at 9:55 AM, Josep Sitjar <josep@sigte.udg.edu <mailto:josep@sigte.udg.edu>> wrote:

    Dear list,
    I'm trying to use GRASS r.li <http://r.li> modules to obtain some
    landscape metrics from a raster map.
    I've been working with PatchAnalyst, Fragstats or LecoS and I've
    no problems, but I've problems to interpret the results obteined
    with r.li <http://r.li>. I don't get a value for a metric (ex.
    r.li.patchdensity or r.li <http://r.li> patchnum), but a raster map.
    I configure the region (r.li.setup) as it's the GRASS manual,
    defining the region fon analysis as 'Whole maplayer' and the
    sampling area as 'Moving Window'.
    ¿Could someone help me to interpretate the results?

    Thank's in advance.

    --
      
    Josep Sitjar
    Técnico SIG
    Tel. (34)972418039
    www.sigte.udg.edu <http://www.sigte.udg.edu>
    <http://exploradoressig.wordpress.com/&gt;
    <http://twitter.com/SIGTE_UDG&gt;
    <http://www.linkedin.com/company/1337058?trk=NUS_CMPY_FOL-co&gt;

    _______________________________________________
    grass-user mailing list
    grass-user@lists.osgeo.org <mailto:grass-user@lists.osgeo.org>
    http://lists.osgeo.org/mailman/listinfo/grass-user

--
  
Josep Sitjar
Técnico SIG
Tel. (34)972418039
www.sigte.udg.edu <http://www.sigte.udg.edu> <http://exploradoressig.wordpress.com/&gt; <http://twitter.com/SIGTE_UDG&gt; <http://www.linkedin.com/company/1337058?trk=NUS_CMPY_FOL-co&gt;

(attachments)

9k=.jpg
ccgchbhj.jpg
bcabbdfb.jpg
gdbjcfjc.jpg

3

Hi Josep,

(attachments)

bcabbdfb.jpg
gdbjcfjc.jpg
ccgchbhj.jpg
9k=.jpg

···

an update: the r.li modules have been essentially rewritten
by Markus Metz in the past weeks.

The results are now identical between GRASS 6 and
GRASS 7 (as it should be). In the GRASS 7 version there is also a new version
of r.li.setup (called g.gui.rlisetup) which is easier to use than that of GRASS 6.

It will be part of the upcoming GRASS 6.4.4 (or you take the snapshot) and it is
already in the GRASS 7.0.0beta1.

In case of one resulting number rather than a map, now the output is properly
generated.

Please give it a try, it should be all fine now.

Best
Markus

On Mon, Jan 13, 2014 at 9:55 AM, Josep Sitjar <josep@sigte.udg.edu> wrote:

Dear list,
I’m trying to use GRASS r.li modules to obtain some landscape metrics from a raster map.
I’ve been working with PatchAnalyst, Fragstats or LecoS and I’ve no problems, but I’ve problems to interpret the results obteined with r.li. I don’t get a value for a metric (ex. r.li.patchdensity or r.li patchnum), but a raster map.
I configure the region (r.li.setup) as it’s the GRASS manual, defining the region fon analysis as ‘Whole maplayer’ and the sampling area as ‘Moving Window’.
¿Could someone help me to interpretate the results?

Thank’s in advance.

–

Josep Sitjar
Técnico SIG

Tel. (34)972418039
www.sigte.udg.edu

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