Greetings! I'm using the extract command (raster package) with a raster layer (x) and a spatial polygons dataframe (y). I'm using it to extract the sum of raster values by each spatial polygon. However, I'm getting NAs as a result for some polygon IDs, which I know isn't true because that doesn't happen in ArcGIS.
Does anyone experienced the same issue? Thanks! Joao ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
