With the recent discussions on R-Tree's and spherical coordinates (i.e. latitude and longitude), I was wondering how boundary conditions would be handled. If I choose a location on the equator as far from the prime meridian as possible, and try to query for all the locations "near" that, within a given bounding rectangle, will it only return locations in 1 direction?
For example: Choose starting location 0.0 lat, 180.0 long. This is also the equivalent location of 0.0 lat, -180.0 long, and very close to 0.0, -179.999. If I choose a bounding rectangle of say 1 degree (-1,179; 1,179; -1,-179; 1,-179), since the R-Tree algorithms are using planar-coordinate distances (or areas), want this miss locations across the boundary, like 0.0, -179.999? How is this typically handled? -Shane _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
