[R-sig-Geo] Spatio-Temporal Kriging: Memory Issues

abdullah karim karimabdullah at yahoo.com
Thu Feb 16 00:58:34 CET 2017


Dear Dr. Coster,
Thank you very much. That worked perfectly. 
-Abdullah  

    On Wednesday, February 15, 2017 8:11 AM, Roelof Coster <roelofcoster at gmail.com> wrote:
 

 Hello Karim,

You might want to use local kriging, as in:

predicted<- krigeST(values ~ 1, data, prediction.grd, v.model, nmax = 500,
stAni = 1)

The nmax parameter is the number of observations that will be used for each
location. The stAni is a parameter controlling whether observations that
are 'spatially' or 'temporally' near will be preferred.

Local kriging may also be theoretically better because it only assumes
local stationarity rather than the existence of a constant mean for the
entire domain.

Hope this helps!

Roelof

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