<p>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?</p>
<div class="gmail_quote">On 2011-06-21 8:54 PM, "Saka Royban" <<a href="mailto:sakaroyban@yahoo.com">sakaroyban@yahoo.com</a>> wrote:<br type="attribution">> Hi all<br>> I'm not sure whether this can be done completely via PostGIS or it needs some <br>
> programming. Anyway, at this step no problem with programming if Knowing the way <br>> <br>> and algorithm.<br>> I have point shapefile (arranged like a grid) and for each point there is 3 <br>> similar measurements (obtained via 3 transmitters) and, of course, x and y <br>
> coordinates. The problem is that when i have a new point with these 3 measures, <br>> How can i interpolate its coordinates and specify its location?<br>> Maybe helpful to say, this type of measurement is distance dependent but <br>
> unfortunately i don't know the exact formula.<br>> <br>> Any help would be appreciated.<br>> Best Regards<br></div>