Hello again: I'm trying to rasterize a spatial points data frame and I seem to be missing something, as seen below:
> str(loc3) Formal class 'SpatialPointsDataFrame' [package "sp"] with 5 slots ..@ data :'data.frame': 477 obs. of 6 variables: .. ..$ ID : num [1:477] 1 2 3 5 6 8 9 10 10 13 ... .. ..$ lonmin : num [1:477] 141 112.9 -85.9 -106.6 -91.2 ... .. ..$ lonmax : num [1:477] 153.6 159.1 -85.4 -93.5 -91 ... .. ..$ latmin : num [1:477] -37.5 -54.8 38 25.8 30.4 ... .. ..$ latmax : num [1:477] -28.16 -9.22 38.38 36.5 30.56 ... .. ..$ location: Factor w/ 275 levels "NSW","Australia",..: 1 2 3 5 6 8 9 10 10 13 ... ..@ coords.nrs : int [1:2] 3 2 ..@ coords : num [1:477, 1:2] -31.3 -25.3 38.3 32 30.5 ... .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : NULL .. .. ..$ : chr [1:2] "lat" "lon" ..@ bbox : num [1:2, 1:2] -37.8 -159.6 62.3 175.3 .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : chr [1:2] "lat" "lon" .. .. ..$ : chr [1:2] "min" "max" ..@ proj4string:Formal class 'CRS' [package "sp"] with 1 slots .. .. ..@ projargs: chr NA > rasterize(loc3,field=location,fun=count,na.rm=TRUE) Error in function (classes, fdef, mtable) : unable to find an inherited method for function rasterize for signature "SpatialPointsDataFrame", "missing" > Do you have any ideas, please? Could it be that the proj4string is NA, do you think, please? Thanks, Erin [[alternative HTML version deleted]]
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