Deal with multiple factorlevel in one grid square
raster::extract(grid, poly, weights = TRUE) is a start. It returns a list which is painful to deal with at first, but can be collected into one data frame for standard summarizing. I'm still a bit confused about whether you want an estimate of a cell overlap in a polygon or something else. Cheers, Mike
On Wed, 24 May 2017, 17:12 Miriam P?ts <miriam.puets at thuenen.de> wrote:
Hi everyone, I have the following problem: I have a personalized grid and a shape file with polygons representing sediment types. Now I would like to apply this grid to the Polygons to identify the sediment type most common within each grid. I tried it with rasterize, but here I can only chose last or first. Die you have any suggestions how I might get the sediment type for each raster cell? Thank you for your help! <?)))>< >?)))>< >?)))>< >?)))>< Miriam P?ts Marine Lebende Ressourcen/ Marine Living Resources Th?nen-Institut f?r Seefischerei/ Th?nen Institute of Sea fisheries Palmaille 9 22767 Hamburg (Germany) Tel: +49 40 38905-105 Mail: miriam.puets at thuenen.de
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Dr. Michael Sumner Software and Database Engineer Australian Antarctic Division 203 Channel Highway Kingston Tasmania 7050 Australia [[alternative HTML version deleted]]