Hi all, i used the function unionSpatialPolygons to dissolve polygons according to an ID value. However, the results were not that i was expecting. It created a SpatialPolygon and it grouped the objects according to the ID value. i.e. one polygon had about 3 subpolygons with the same value. How is the best way to create a new SpatialPolygons with all subpolygon as polygon and preserve their ID,
I share a screen shot where i selected one object and then i show the other objects with the same ID value, Also, i found a forum topic which has a similar issue, http://r-sig-geo.2731867.n2.nabble.com/unionSpatialPolygons-single-polygon-instead-of-multipart-polygon-tc2765492.html#a2765496 Thanks, -- *Alejandro Coca Castro***** ****
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