[postgis-devel] Concept of surfaces for rasters ( Interpolation of points)

[Bborie Park]

Sounds like an interesting idea. Any idea on the function signature?

-bborie

On Sun, Jan 4, 2015 at 11:37 AM, Nathaniel Clay <clay.nathaniel at gmail.com>
wrote:

> Hi all,
>
> Has any one give any thought to having the ability to mark a raster as a
> surface, then instead of returning the nearest value when a point is
> queried against a raster it preforms a set interpolation method to return
> an interpolated value. This would also get adjoining tiles, to fill in
> missing points in the case of the interpolation window overflowing the
> current tile.  Thus treating the raster as a surface instead as discreet
> points. I believe that this would be a good option to have available for
> DEMs in particular.  Would this be a welcomed edition to Postgis? I have
> one new feature that I am working on that would benefit having this baked
> in. I am considering bi-cubic and bi-linear interpolation options, should I
> consider any others.
>
> Thanks,
>
> Nathaniel Hunter Clay
>
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