Thanks for your reply.
> Aside from the original port which had many divergences from java, the > only other issue applied to spatial is LUCENENET-431, which would be easy > to include. > > That is not correct. LUCENENET-431 was committed, but some fixed from Java Lucene 3.0.3 are in as well. The whole thing is a mess. The reason for this mess is the amount of bugs in the original Java implementation of Spatial. This is also why it has been deprecated in 3.6: https://issues.apache.org/jira/browse/LUCENE-2599 I think the best route at this point is to port LSP aka Spatial4j to .NET and start using it as the Spatial module for Lucene.NET https://issues.apache.org/jira/browse/LUCENE-3795 This is a Java Lucene 4 feature, but the current spatial implementation is pretty unisable. I'm going to start looking into this, and would definitely appreciate your input. Itamar.