[R] Dissolve polygon
bellard.celine at gmail.com
Fri Jul 20 17:51:02 CEST 2012
I am working with a SpatialPolygonsDataFrame of many islands. There are a
lot of polygons (islands) composing my SpatialPolygonsDataFrame.
I want to extract the elevation of each island.
I need to separate the different polygons (like dissolve function in
arcgis), to have the elevation of each island.
Do you have any idea how can I do that ?
I already read a lot of forum, and read the maptools package but I did not
find something useful for my problem.
x 40.32140 63.500179
y -25.60895 -3.711519
Is projected: FALSE
proj4string : [+proj=longlat +ellps=WGS84 +no_defs]
Madagascar and the Indian Ocean Islands:1 hotspot_area:1
Madagascar and the Indian Ocean Islands_hotspot_area:1
Madagascar and the Indian Ocean Islands:1
Thanks a lot for your help,
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