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Karl Wright edited comment on LUCENE-6699 at 8/11/15 11:20 PM: --------------------------------------------------------------- Ok, did not understand that. We don't yet have the ability to get a Bounds result for a shape that is x,y,z instead of lat/lon. (That was the optimization we discussed but decided to do as a second step). But I presume you *do* want the ability to know, for a given planet model, the actual bounds of the planet. ;-) That's gotta go somewhere. was (Author: kwri...@metacarta.com): Ok, did not understand that. We don't yet have the ability to get a Bounds result for a shape that is x,y,z instead of lat/lon. But I presume you *do* want the ability to know, for a given planet model, the actual bounds of the planet. ;-) That's gotta go somewhere. > Integrate lat/lon BKD and spatial3d > ----------------------------------- > > Key: LUCENE-6699 > URL: https://issues.apache.org/jira/browse/LUCENE-6699 > Project: Lucene - Core > Issue Type: New Feature > Reporter: Michael McCandless > Assignee: Michael McCandless > Attachments: Geo3DPacking.java, LUCENE-6699.patch, LUCENE-6699.patch, > LUCENE-6699.patch, LUCENE-6699.patch > > > I'm opening this for discussion, because I'm not yet sure how to do > this integration, because of my ignorance about spatial in general and > spatial3d in particular :) > Our BKD tree impl is very fast at doing lat/lon shape intersection > (bbox, polygon, soon distance: LUCENE-6698) against previously indexed > points. > I think to integrate with spatial3d, we would first need to record > lat/lon/z into doc values. Somewhere I saw discussion about how we > could stuff all 3 into a single long value with acceptable precision > loss? Or, we could use BinaryDocValues? We need all 3 dims available > to do the fast per-hit query time filtering. > But, second: what do we index into the BKD tree? Can we "just" index > earth surface lat/lon, and then at query time is spatial3d able to > give me an enclosing "surface lat/lon" bbox for a 3d shape? Or > ... must we index all 3 dimensions into the BKD tree (seems like this > could be somewhat wasteful)? -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org