I admit that my test was somewhat lunatic but I took some random dataset from 
Finland with 68101 polygons and converted data into MVT with default settings 
which means that minzoom was 0.  As a result 12196 of the source polygons were 
written into the 0-level protobuf tile (in EPSG:3067 gridset) and none of the 
polygons is valid. Most polygons have too few points and those which have 
enough points have self-intersections.

Perhaps there should be some sort of geometry validator in the writer chain?

-Jukka Rahkonen-
gdal-dev mailing list

Reply via email to