Re: [R-sig-Geo] gstat: Cokriging with unusual neighbourhood choice - is this possible?

2013-08-12 Thread Edzer Pebesma
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 07/31/2013 02:26 PM, Ralph Mettier wrote: > Dear Edzer > > Thank you greatly for your reply. I have attempted to implement > the solution you suggested, but either it's not what I was looking > for, or more likely, I'm missing something. Currentl

Re: [R-sig-Geo] gstat: Cokriging with unusual neighbourhood choice - is this possible?

2013-07-31 Thread Ralph Mettier
Dear Edzer Thank you greatly for your reply. I have attempted to implement the solution you suggested, but either it's not what I was looking for, or more likely, I'm missing something. Currently the relevant code passage looks like this: ## m.grid=data.frame(x=outgrid$V1,y=o

Re: [R-sig-Geo] gstat: Cokriging with unusual neighbourhood choice - is this possible?

2013-07-23 Thread Edzer Pebesma
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dear Ralph, I guess you'd need to define three variables, concA, precA and precB. Then, you can let precA and precB have different neighbourhood specs, but make them statistically "identical" by specifying the same variograms for precA and precB as w

[R-sig-Geo] gstat: Cokriging with unusual neighbourhood choice - is this possible?

2013-07-23 Thread Ralph Mettier
I'm looking at two variables, concentration and precipitation, measured at two networks of stations: network A measures both variables at few (~30), widely spaced stations network B measures only precipitation at many (~1800) densely spaced stations a decent correlation between the two variables