Delimit a polygon for the region which is>, 1000 m from my raster altitude
Ok thank you Robert Hijmans If you want to keep the raster cell values, you could do shapefile(pol2, "polygon2.shp") and use that file.
On Sat, May 2, 2015 at 2:10 PM, sadaoui <sadaouimahrez@> wrote:
Thank you "Robert Hijmans", it works with this function ; shapefile(pol3, "polygon3.shp") but I want to have the corresponding data to this shapefile. I tried, as did you say : "or use the SpatialPolygons object to create a SpatialPolygonsDataFrame and then use writeOGR (that is what the shapefile function does for you). " I tried to follow this solution : http://gis.stackexchange.com/questions/61633/r-convert-a-spatial-polygon-objet-to-spatial-polygon-data-frame but I can not convert the spatial polygon to SpatialPolygonsDataFrame. sorry i am a beginner in this field. thank you -- View this message in context: http://r-sig-geo.2731867.n2.nabble.com/Re-Delimit-a-polygon-for-the-region-which-is-1000-m-from-my-raster-altitude-tp7588152p7588155.html Sent from the R-sig-geo mailing list archive at Nabble.com.
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