I'm using Ordinary Kriging to interpolate a set of spatial data. I'm working on different sets which represent different days of measurement. I get good results, apart from one specific set. Will post some examples:
I see a pretty evident pattern, in that values tend to get high in the top-right corner, but it is not reflected by the interpolating surface.
Thoughts:
There could be some bug in my code, but as said, it goes well for all other sets except this one. I've tried applying different variograms but the results is still silly. On the other hand, other algorithms (e.g. inverse distance) do not show any issue.
Other info:
I'm using R, but could switch to GIS if needed. For R folks, I'm just calling:
kriging
- Good interpolation
- Good interpolation
- Strange interpolation:
I see a pretty evident pattern, in that values tend to get high in the top-right corner, but it is not reflected by the interpolating surface.
Thoughts:
There could be some bug in my code, but as said, it goes well for all other sets except this one. I've tried applying different variograms but the results is still silly. On the other hand, other algorithms (e.g. inverse distance) do not show any issue.
Other info:
I'm using R, but could switch to GIS if needed. For R folks, I'm just calling:
kriging