sum() with raster::aggregate() in R

If you try to use sum() directly in raster::aggregate() and have NA values, you’ll get NA as a result. You need to build a tiny function and pass the rm.na=T command to sum(). More succintly:

# Dissolve duplicate geometries and sum OOIP
 fm <- raster::aggregate(fm.raw,
                         by="OilFieldID",
                         sums=list(list(function(x) sum(x,na.rm=T),
                                        "OOIP_pooltable")))