> then use LatLonDocValuesField Right! Actually, LatLonDocValuesField is a good example of what we're trying to do here, but specialized to the 2D, lat/long case. It stores a doc value representation of a lat/long point that can be used for "slow" queries—which complement the points-based queries—(e.g., LLDVF#newSlowBoxQuery, LLDVF#newSlowDistanceQuery, etc.). It could also support faceting (although I don't think an implementation exists?). And, it's multi-valued (which it achieves by packing a lat/long tuple into a single long value and then encoding with SORTED_NUMERIC. I think this is actually a great example we could follow here, and supports the idea of _not_ adding a specific DV type, but rather building on top of BDV.
In our use-case, we'd like to generalize to N-dims and not make assumptions about lat/long data. Because of that, I don't see a way to pack our dims into a single long value and build on SORTED_NUMERIC, so I think we need to have a different encoding scheme on top of BDV. Patrick, maybe this is what you were getting at in your last comment, but please let me know if I'm mis-interpreting. So, circling back to Marc's original question, I would suggest we _not_ introduce a new doc values type (at least at this time), and build in BDV. Cheers, -g On Wed, May 25, 2022 at 5:23 AM Robert Muir <rcm...@gmail.com> wrote: > > On Wed, May 25, 2022 at 8:04 AM Michael Sokolov <msoko...@gmail.com> wrote: > > > > Also, there should be examples from other fields. Suppose you are > > indexing map data and want to support a UI that shows "hot spots" on > > the map where there is a lot of let's say ... activity of some sort. > > You'd like to facet on 2-d areas. > > then use LatLonDocValuesField > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org > For additional commands, e-mail: dev-h...@lucene.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org
