On Mon, 24 Sep 2018, Micha Silver wrote:
The guidelines that I follow include:
* Rainfall interpolation (of any kind) should be done only for long time
periods = at least a full season. since you are looking at 13 years of
data then this requirement is fulfilled.
* The rules of thumb for "how many points" for kriging interpolation
usually says > 30. So again you are fine.
* The GRASS modules offer only ordinary kriging AFAIK, which might be
appropriate in this case. But if you want to use Kriging with External
Drift with the elevation as the secondary "trend" variable, I think
you'll need to go with with R. Having said that, I think that "the
jury is still out" on whether elevation improves the interpolation or
not.
Micha,
Thanks for the insights. I think that OK would be adequate for now because
the climate is changing and this is a long-term project that will be
monitored and and adjusted as necessary,
Regards,
Rich
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