[GRASS5] Re: [bug #3323] (grass) r.le.setup does not work properly

[Martin Wegmann]

Hello Jachym, 

thanks for this information. I tested r.fragstats and it looks very promising.  

A few questions: I did not receive an output image with the corresponding IDs 
(how is it called by the way). Would it be possible to convert the image into 
a vector and add all these informations in the *.txt files to this vector. 
Then it would be possible to map the different patch attributes and query it 
inside GRASS. 

I will need some time to get familiar with the fragstats naming 
convention/features etc. and become experienced with these additional 
features inside GRASS then I can do some testing or whatever help is needed. 

BTW: I found a few error messages after executing r.fragstats (see below), 
they might be interesting for you. 

cheers, Martin



r.fragstats input=test_sub output=frag_test bound_wght=0.0 -i


                            FRAGSTATS 2.0
         PROGRAM TO CALCULATE LANDSCAPE FRAGMENTATION INDICES


Processing image: glc00.1_sub
 rows: 97
Interior Background Value: 999
Exterior Background Value: -999

... landscape does not contain background
maxclasses: 14 rows:


Class     0:       545 cells,        1 patches
Class     1:      6262 cells,       42 patches
Class     2:      1453 cells,       38 patches
Class     7:      5153 cells,       26 patches
Class    10:        26 cells,        5 patches
Class    13:       141 cells,        4 patches

number of classes: 6
max patches/class: 42
max patch size: 3403


class: 0
class: 1
class: 2
class: 7
class: 10
/usr/local/grass-6.1.cvs/scripts/r.fragstats: line 160:  6342 Segmentation 
fault      fragstats $GIS_OPT_input $GIS_OPT_output $ $ 7 $ $ $background 
$max_classes $wt_file $id_image $desc_file $bound_wght $diags $prox_dist 
$nndist $patch_stats $class_stats



On Monday 06 June 2005 16:27, Jachym Cepicky via RT wrote:
> hallo,
> we try to make fragstats
> (http://www.umass.edu/landeco/research/fragstats/fragstats.html) work with
> grass. Paolo Cavallini knows more about this. He says, that fragstats
> should be better, than r.le* modules in GRASS.
>
> However, it seems, there is some bug in the code (Can not allocate space
> for edge!), it would be good, if you could test r.frastats too, so that we
> know more about this.
>
> The package with r.fragsts can be downloaded here:
>     http://les-ejk.cz/programs/grass/fragstats.tgz
>
> It contains:
>     * fragstats with support for GRASS-raster
>     * r.fragststs -- GRASS-shell script for fragstats
>     * files for QGIS (GRASS-Tools)
>
> To install run
>     ./configure --with-grass=/path/to/grass/inculde/dir ...
>     make
>     make install
>
> I hope, it works :-)
>
> Jachym
>
> On Mon, Jun 06, 2005 at 03:02:25PM +0200, Request Tracker wrote:
> > this bug's URL: http://intevation.de/rt/webrt?serial_num=3323
> > -------------------------------------------------------------------------
> >
> > Subject: r.le.setup does not work properly
> >
> > Platform: GNU/Linux/i386
> > grass obtained from: Trento Italy site
> > grass binary for platform: Compiled from Sources
> > GRASS Version: cvs 6.1 end of Mai
> >
> > hello,
> >
> > running r.le.setup results in a stop after the last prompt - I have to do
> > CTRL-C to get to the setup screen.
> >
> > > r.le.setup
> >
> > OPTION   Raster map to use to setup sampling
> >      key:map
> > required:YES
> >
> >
> > enter raster map name:
> > Enter 'list' for a list of existing raster files
> > Enter 'list -f' for a list with titles
> > Hit RETURN to cancel request
> >
> > > raster.1
> >
> > <raster.1>
> >
> > OPTION   Vector map to overlay.
> >      key:vect
> > required:NO
> >
> > Overlay a vector file? (y/n) [n]
> >
> > OPTION   Site map to overlay.
> >      key:site
> > required:NO
> >
> > Overlay a site file? (y/n) [n]
> >
> >
> > .... stopped. no reaction.
> >
> > After CTRL-C the r.le.setup runs fine.
> >
> > Martin
> >
> > -------------------------------------------- Managed by Request Tracker
> >
> > _______________________________________________
> > grass5 mailing list
> > grass5 at grass.itc.it
> > http://grass.itc.it/mailman/listinfo/grass5

-- 
Martin Wegmann

DLR - German Aerospace Center
German Remote Sensing Data Center
@
Dept.of Geography
Remote Sensing and Biodiversity Unit
University of Wuerzburg
Am Hubland
97074 Würzburg

phone: +49-(0)931 - 888 4797
fax:   +49-(0)931 - 888 4961
http://www.biota-africa.org
http://www.biogis.de