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Results tagged with interpolation
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user 64376
The estimation of values at unsampled points based on known values of surrounding points.
3
votes
Validity of ordinary kriging of polygon centroids
A key question is what "polygon based data" means? Does it mean the spatial average value, is it a count or a classification.
In the case of a spatial average value it is already well known in the ge …
- 129
4
votes
Strange spatial interpolation results from ordinary kriging
The smoothing spline can be replicated by using cokriging, Ordinary kriging & universal kriging are equivalent to Radial Basis function interpolation and interpolation with a spline is a special case of …
- 129
0
votes
Is kriging an exact interpolation method?
Yes, Ordinary & Simple & Universal kriging are all "exact " interpolators. You simply have to look at the kriging equations for each of those and note that the system of equations has a unique solutio …
- 129
1
vote
Confidence intervals on raster produced by kriging spatial interpolation?
You will find papers in the literature that have used the kriging standard deviation to construct confidence intervals but this is a fundamental mis-understanding of how the kriging standard deviation …
- 129
1
vote
Minimum number of samples for kriging interpolation
There are two separate questions, first the number of data locations to use in estimating/modeling the variogram and secondly the number of data locations to use in the kriging equations to interpolat …
- 129
3
votes
Measuring error of Spatial Analyst interpolation such as spline, nearest neighbor and kriging?
Depending on the type of spline, it is most likely a special case of Radial Basis function interpolation but RDF is theoretically equivalent to one of the forms of kriging. … RBF does not generate the "interpolation errors" since it is also an exact interpolator so you would have to use a variation of cross validation. …
- 129