[postgis-users] Interpolation problem

[Chris Hermansen]

Would not there be isolines of the same signal strength? In that case there
is no unique x,y for a given signal strength...
On 2011-06-21 9:54 PM, "Saka Royban" <sakaroyban at yahoo.com> wrote:
> 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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