You have a typo.
It is SpatialPixelsDataFrame. note the s
Nikhil Kaza
Asst. Professor,
City and Regional Planning
University of North Carolina
nikhil.l...@gmail.com
On Aug 25, 2010, at 4:43 AM, Dorothea Lemke wrote:
Dear list,
I have problems to coerce a SpatialGridDataFrame object to a
SpatialPixelDataFrame. I 've calculated a kerneldensity (splancs)
and I want
to convert the results from the SpatialGridDataFrame to a
SpatialPixelDataFrame.
My R-code:
library (maptools)
library (splancs)
library (rgdal)
kcasesC67m<-spkernel2d(cases, pRBMS, h0=3500, gt)
kcontrolsC67m<-spkernel2d(controls, pRBMS, h0=3500, gt)
df<-data.frame(kcasesC67m=kcasesC67m, kcontrolsC67m=kcontrolsC67m)
spkratio<-SpatialGridDataFrame(gt, data = df)
spkratioP<-as(spkratio, "SpatialPixelDataFrame")
But I get the error message: "No methods and no standards to convert
SpatialGridDataFrame in SpatialPixelDataFrame".
Many thanks for your help
Dorothea
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