I'm trying to work out if it is possible to use PostGIS to calculate if I have a line of sight from point A to Point B.<br><br>Basically I want to know, if from standing at Point A, taking into account all of the elevation data I have, can I see Point B?<br>
<br>I have downloaded all the required elevation data and imported this as rasters into my database. I'm now trying to work out if there is a way to use this data to do what I need. I've looked at ST_3DIntersects, but perhaps I need a way to extract a LINE from my raster? I'm not quite sure how to do this.<br>
<br>Would anyone be able to point me to the correct page on the manual that might help me?<br><br>Thanks <br><br>David<br>