<div dir="ltr"><div><span style="font-family:arial,sans-serif;font-size:13px">Hi, PostGIS developers!</span></div><div><span style="font-family:arial,sans-serif;font-size:13px"><br></span></div><div><span style="font-family:arial,sans-serif;font-size:13px">Currently, PostGIS supports knn-gist with <-> and <#> operators which are distance to centroid and MBR, but not exact distance to geometrical object, because of knn-gist limitation. However, it's not so fundamental limitation, in principle index distance could be rechecked from heap providing exact knn.
</span></div><div><span style="font-family:arial,sans-serif;font-size:13px">Do you know PostGIS users lacking of such exact knn? If so, could you give some example where <-> and <#> operators are really insufficient?</span></div>

<div><br></div><span style="font-family:arial,sans-serif;font-size:13px">
------</span><br style="font-family:arial,sans-serif;font-size:13px"><span style="font-family:arial,sans-serif;font-size:13px">With best regards,</span><br style="font-family:arial,sans-serif;font-size:13px"><span style="font-family:arial,sans-serif;font-size:13px">Alexander Korotkov.</span><br>



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