I know Patch analyst but it seems compatible only with ArcGis?
GIS tools-landscape fragmentation
Ciao!
Maybe in QGIS: plugins Lecos (LecoS - Landscape Ecology Statistics) and Molusce (MOLUSCE - Modules for Land Use Change Simulations)?
I'm didn't use the but GRASS GIS has a lot of modules dealing with landscape analysis. Please have a look here: http://grass.osgeo.org/grass70/manuals/raster.html and search for the modules called r.li.* . Moreover probably you can use them exploiting the QGIS processing plugin.
I suggest use ht-index to measure the fragmentation, since there surely far more small patches than large ones; the higher the ht-index, the more complex or diverse the fragmentation.
http://arxiv.org/ftp/arxiv/papers/1305/1305.0883.pdf
http://en.wikipedia.org/wiki/Head/tail_Breaks
In QGIS you may use the following Grass Plugin tools for Raster processing:
r.li - landscape structure analysis package and r.le.patch for sets of patches in a landscape.
For activating and working with the Grass Plugin in QGIS have a look at the links.
http://grass.osgeo.org/grass64/manuals/r.li.html
http://grass.osgeo.org/grass64/manuals/r.le.patch.html
http://qgis.spatialthoughts.com/2012/01/setting-up-working-grass-environment-in.html
Dear Kimon,
Thanks a lot for your reply,
Well, I tried to use GRASS plugin but I got the error message ' cannot activate grass' :(. Currently, I am looking for a solution in some forums. Do you know how to solve this problem?
Dear Kimon,
An other option to calculate landscape metric is fragstad software. It is user friendly and freely available on the net.
I don't know much about it myself, but have a look at FragStats:
http://www.umass.edu/landeco/research/fragstats/fragstats.html
http://www.umass.edu/landeco/research/fragstats/fragstats.html
Actually the r.li suite is based on FRAGSTATS. Concerning the "the error message" (@Mohamed), it might be due to installation issues. If you operate on a windows system check a) if all prerequisites has been inslalled - some libraries are needed in order to run grass and b) that the installation paths does not include spaces or non latin letters in their names. If you oparate a linux system check the dependancies for your QGIS installation.
Ciao!
Maybe in QGIS: plugins Lecos (LecoS - Landscape Ecology Statistics) and Molusce (MOLUSCE - Modules for Land Use Change Simulations)?
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