Hi all,
Sorry to have been silent during a couple of weeks, I was away working in Algeria with no possibility of web connexion. I will try your suggestions ASAP.
Some rapid infos (at least to the questions I can most easily answer...):
Actually the question is from where Patrick downloaded his data?
I got them from
http://dataservice.eea.europa.eu/dataservice/metadetails.asp?id=822
This is the European Environment Agency. IFEN (the French site) mentioned by Yves does not deliver, to my knowldege, rasters at 100m resolution... althought they deliver files in good "Lambert II etendu". I must admit I still wonder what does mean this 100 m resolution actually compared to the classical 250m... Just computing and interpolation or reality? I have followed the indication given in metadata file regarding projection, which is laea.
PS : why do you talk about raster for corrine land cover? This is a vector file! isn't ?
Corine can be delivered in the two types (vector or raster). Raster would ideally fit my aim here (neighbourhood analysis and computing buffer composition using either grass or R).
Anyway, thank you both a lot for your advices. They will be most helpful. Also aside, a special thank to Markus Neteler... I would have suffered a lot in GRASS without your green book!!!
Cheers,
Patrick