<div dir="ltr">Hi, I have a problem.<br>I'm trying to calculate the area of a great number of sites on a specific territory.<br>The problem is that these sites can overlap (as they do very frequently) and I do not want to count the same portion of land twice. <br>
A st_union would work with this right? Unfortunately my experience with this function is that it is way too slow for the numerous polygons I would have to merge. As a matter fact it would take years.<br>Does anybody know of a hack around this? (In PostGIS or ArcGIS)<br>
<br>Many thanks!<br><br></div>