<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:10pt"><div>Hi ,</div><div><br></div><div>I have a task which I though would be a good learning excercise for me, however it turns out that I need to go back to elementary school and pay more attention!</div><div><br></div><div>I though I would ask the forum incase anyone has done anything similar. It is only marginally related to postgis but if anyone knows of a better forum please let me know.</div><div><br></div><div>The Problem:</div><div><br></div><div>I have a postgis database populated with points which represent locations of wind turbines. I need to regularly update the database when new turbines are built or old ones are replaced or removed.</div><div>Usually I recieve coordinates or a shapefile, but this time I have only recieved a photograph taken at eye-level which show 5 existing wind turbines( for which I have points) and the
foundation of the new windturbine presently being built.</div><div><br></div><div>Using the existing wind turbines as reference points, and knowing their heights is the only information I have to determine the location of the new wind turbine. Using trignometry and triangulation techniques is it possible to determine the location of the new wind turbine?</div><div><br></div><div>I´m sure there is software to do this, but I thought asking here might bring me closer to an answer quicker.</div><div><br></div><div>thanks for any help,</div><div><br></div><div>Rob</div></div></body></html>