extract to point bilinear interpolation

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07-06-2017 02:00 PM
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New Contributor

Does anyone know how the interpolation option for the tool Raster (extract to point) works. It says bilinear interpolation. So, does it take 4 or 9 neighbors into account?

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MVP Esteemed Contributor

In other areas of the spatial analyst, the 4 nearest neighbours are used.... ie

http://desktop.arcgis.com/en/arcmap/latest/extensions/spatial-analyst/performing-analysis/cell-size-...

So, unless esri wanted to introduce some confusion into the mix, they would use the same approach or provide a caveat indicating otherwise.  

And have you concern, or examples where this would be an issue in your work, or it for curiosity or clarity of method?