[gdal-dev] Kriging Interpolation

[Ian Reese]

Hi Gdal,

I'd like to know if it is possible to make Kriging Interpolation part of gdal_grid.  We work with a good deal of scattered point elevation data and neither IDW or Linear interpolations(smooth or not smooth)  produce the desired visual results.  Nor are they fast enough for the density of data we commonly work with. Linear interpolation is a reliable and fast method, however the triangulated results are difficult to work with visually.

For some visual comparisons and reference, here is a link to a folder of sample points(shp) for a test area, two examples of kriged data for that test region, and a BASH script to reproduce IDW and Linear interpolations of the same region.

https://drive.google.com/open?id=1HKbK4wMmVN6JZSvhxBQDub1WXBLE710H

Here is an example of the Kriging method used by ArcGIS:
http://desktop.arcgis.com/en/arcmap/latest/extensions/geostatistical-analyst/kriging-in-geostatistical-analyst.htm

Few graphs explaining best interpolation methods to use with given data.  Gridded vs. scattered.
https://www.neonscience.org/spatial-interpolation-basics

If it is possible, we are curious to know what type of funding would be needed.

Cheers,

Ian

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