[AniMov] adehabitat-GRASS

Leonardo Lami lami at faunalia.it
Mon Jun 27 15:42:35 CEST 2005


Dear all,
I'm testing the new R-GRASS6 interface (spgrass6) of Roger Bivand and it works 
well with raster and vector too.
I see that to move a vector from GRASS to R or viceversa it uses shapefiles.
In adehabitat "kernelUD" is the most powerful function and the correlated 
function "getverticeshr" allows to estimate the Kernel Home-Range in 
percentage and it returns a polygon object of class kver.

The structure of an object of class kver is the follow:
str(ver)
List of 1
 $ Brock:Classes area  and `data.frame':        120 obs. of  3 variables:
  ..$ id: Factor w/ 1 level "1": 1 1 1 1 1 1 1 1 1 1 ...
  ..$ x : num [1:120] 698626 698670 698714 698758 698802 ...
  ..$ y : num [1:120] 3160417 3160417 3160417 3160417 3160417 ...

Would it be possible to convert it in a shapefile to import it in GRASS?
In this way, it will be possible develop a large range of analysis between the 
home range and the structure of the territory in GRASS.

An other way would to convert the result of getvolumeUD (a grid where the 
value cell describe the home ranges estimated at different probability 
levels) in a SpatialGridDataFrame and then move it in GRASS.

Thank of all
Leonardo
-- 
Leonardo Lami
lami at faunalia.it            www.faunalia.it
Via Colombo 3 - 51010 Massa e Cozzile (PT), Italy   Tel: (+39)349-1310164
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