[postgis-users] Interpolation problem

[Saka Royban]

yes, of course.there is a unique x,y for each triple measurements. 
This measurements are, in fact, Received Signal Strength so it means more 
distance less RSS value.





________________________________
From: Chris Hermansen <chris.hermansen at tecogroup.ca>
To: PostGIS Users Discussion <postgis-users at postgis.refractions.net>
Sent: Wed, June 22, 2011 8:35:05 AM
Subject: Re: [postgis-users] Interpolation problem


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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