Hi Michael, I started playing with Lucene LatLon and Geo3D points. I have a problem about the constructor of Geo3DPoint.
In the other constructor, Geo3DPoint(String name, double x, double y, double z) <https://lucene.apache.org/core/6_1_0/spatial3d/org/apache/lucene/spatial3d/Geo3DPoint.html#Geo3DPoint-java.lang.String-double-double-double->. How can I map*,* Lat, Lon and Altitude into x,y,z. If we use x,y,z there should be an Axis system. For an example I have these questions, - Where those axises are pointed to? - What are the units (km or m)? If you can give me an idea on that it will be really helpful. :-) Thank you. Regards, Janaka. On Thu, Aug 18, 2016 at 9:55 AM, Janaka Thilakarathna < bjchathura...@gmail.com> wrote: > Hi Michael, > > Sorry for the late reply and thank you very much for your quick respond. > :-) > > Yeah, it looks like an interesting data set to play with, but it is really > large to start. :D > I will try some simple projects and get back to you if I find any trouble. > > Janaka. > > On Tue, Aug 16, 2016 at 2:49 PM, Michael McCandless < > luc...@mikemccandless.com> wrote: > >> What a fun use case for dimensional points! I just saw NASA announce >> this data set recently: https://plus.google. >> com/+MichaelMcCandless/posts/h8eUtkhizKG >> >> And I was wondering how to play with it... 36 TB of airplane flight >> routes :) >> >> You can easily index your data (3 spatial dims + 1 time dim) using e.g. >> DoublePoint but then the only way to query those points currently is the >> PointRangeQuery (4D boxes); maybe you can use that to find the "interesting >> area" traversals? >> >> For "minimum distance between two air-planes", you might be able to start >> with LatLonPoint.nearest (KNN search implementation) but generalize it a >> bit to N dims not just the 2 (lat, lon) that it supports today? >> >> Mike McCandless >> >> http://blog.mikemccandless.com >> >> On Tue, Aug 16, 2016 at 4:29 AM, Janaka Thilakarathna < >> bjchathura...@gmail.com> wrote: >> >>> Hi everyone, >>> >>> I am from University of Moratuwa. I have a quite understanding in >>> Lucene's >>> Text Search, Geo3DPoint >>> <https://lucene.apache.org/core/6_0_0/spatial3d/org/apache/l >>> ucene/spatial3d/Geo3DPoint.html#newShapeQuery-java.lang.Stri >>> ng-org.apache.lucene.spatial3d.geom.GeoShape->, >>> LatLonPoint >>> <https://lucene.apache.org/core/6_0_0/sandbox/org/apache/luc >>> ene/document/LatLonPoint.html#newPolygonQuery-java.lang.Stri >>> ng-double:A-double:A-> >>> but I have never used Lucene for multi dimentional space search. >>> >>> The idea is to use multi dimensional space search on 4 dimensional >>> space(3 >>> physical dimensions and time as another dimension) to calculate results >>> for >>> following queries. >>> >>> - minimum distance between two air-planes >>> - whether air planes goes through and interesting area. (For a >>> example: >>> A forbidden air space) >>> >>> Paths of air-planes can be represented by arrays of 4D points. >>> (time,x,y,z). In other words I have different x,y,z coordinates for >>> different time values. My idea is to index these points and query for >>> above >>> results. >>> >>> Since there is no much tutorials on this new feature on Lucene 6, I am >>> quite confused where to start the project. I am really glad if someone >>> can >>> help me with this. >>> >>> I just want to know whether I can use Lucene for this use-case. Further >>> if >>> you can point me out a place to start developing, it will be really help >>> full. >>> >>> Thank you! >>> >>> Regards >>> >>> -- >>> *Janaka Chathuranga Thilakarathna* >>> Undergraduate at Computer Science and Engineering Department, >>> UNIVERSITY OF Moratuwa, Sri Lanka*.* >>> >>> mobile :(+94)* 713315725 **| *email : *janaka...@cse.mrt.ac.lk* >>> <janaka...@cse.mrt.ac.lk>*, bjchathura...@gmail.com >>> <bjchathura...@gmail.com>* >>> skype : *janaka.chathurangat* | website : janakact.wordpress.com >>> >>> my public profiles : [image: Facebook] >>> <http://www.facebook.com/bjchathuranga> [image: LinkedIn] >>> <http://lk.linkedin.com/pub/janaka-chathuranga-thilakarathna/78/2a8/807/ >>> > >>> >> >> > > > -- > *Janaka Chathuranga Thilakarathna* > Undergraduate at Computer Science and Engineering Department, > UNIVERSITY OF Moratuwa, Sri Lanka*.* > > mobile :(+94)* 713315725 **| *email : *janaka...@cse.mrt.ac.lk* > <janaka...@cse.mrt.ac.lk>*, bjchathura...@gmail.com > <bjchathura...@gmail.com>* > skype : *janaka.chathurangat* | website : janakact.wordpress.com > > my public profiles : [image: Facebook] > <http://www.facebook.com/bjchathuranga> [image: LinkedIn] > <http://lk.linkedin.com/pub/janaka-chathuranga-thilakarathna/78/2a8/807/> > -- *Janaka Chathuranga Thilakarathna* Undergraduate at Computer Science and Engineering Department, UNIVERSITY OF Moratuwa, Sri Lanka*.* mobile :(+94)* 713315725 **| *email : *janaka...@cse.mrt.ac.lk* <janaka...@cse.mrt.ac.lk>*, bjchathura...@gmail.com <bjchathura...@gmail.com>* skype : *janaka.chathurangat* | website : janakact.wordpress.com my public profiles : [image: Facebook] <http://www.facebook.com/bjchathuranga> [image: LinkedIn] <http://lk.linkedin.com/pub/janaka-chathuranga-thilakarathna/78/2a8/807/>
