[postgis-users] Interpolation problem

[Chris Hermansen]

What are the three measurements?  Is it reasonable to assume that knowing
three measurement values tells you the location ie is there a unique x,y for
each triple of measurements?
On 2011-06-21 8:54 PM, "Saka Royban" <sakaroyban at yahoo.com> wrote:
> Hi all
> I'm not sure whether this can be done completely via PostGIS or it needs
some
> programming. Anyway, at this step no problem with programming if Knowing
the way
>
> and algorithm.
> I have point shapefile (arranged like a grid) and for each point there is
3
> similar measurements (obtained via 3 transmitters) and, of course, x and y

> coordinates. The problem is that when i have a new point with these 3
measures,
> How can i interpolate its coordinates and specify its location?
> Maybe helpful to say, this type of measurement is distance dependent but
> unfortunately i don't know the exact formula.
>
> Any help would be appreciated.
> Best Regards
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