[R-sig-Geo] The sum.w Field in SDF

I understand that the sum.w field is the sum of the weights associated with a particular observation/location. But what is this sum taken over? Is there a way to access the individual weights before they are summed? Basically, I need a single weight for each observation (not a sum), so that I can

[R-sig-Geo] Robust GWR

Hi, I have a very large dataset and I would like to try using robust GWR since I have a lot of outliers after the initial GWR fit. I am using the method in Brundsdon et al. page 78. They state to take the weights of each observation from GWR and multiply them to the "downweights" (a reweighting of

Re: [R-sig-Geo] GWR.sel returning CV of NA, and Runtime

Thanks. Truncation is my guess. Another student geocoded the data and wrote it to a CSV file. It's possible that either the site truncated, or the precision when written to CSV or imported into R was modified. The dataset contains observations from a large county in California, so there are section