- 29 Jun, 2015 2 commits
- 26 Jun, 2015 1 commit
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antirez authored
The GIS standard and all the major DBs implementing GIS related functions take coordinates as x,y that is longitude,latitude. It was a bad start for Redis to do things differently, so even if this means that existing users of the Geo module will be required to change their code, Redis now conforms to the standard. Usually Redis is very backward compatible, but this is not an exception to this rule, since this is the first Geo implementation entering the official Redis source code. It is not wise to try to be backward compatible with code forks... :-) Close #2637.
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- 24 Jun, 2015 1 commit
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antirez authored
The returned step was in some case not enough towards normal coordinates (for example when our search position was was already near the margin of the central area, and we had to match, using the east or west neighbor, a very far point). Example: geoadd points 67.575457940146066 -62.001317572780565 far geoadd points 66.685439060295664 -58.925040587282297 center georadius points 66.685439060295664 -58.925040587282297 200 km In the above case the code failed to find a match (happens at smaller latitudes too) even if far and center are at less than 200km. Another fix introduced by this commit is a progressively larger area towards the poles, since meridians are a lot less far away, so we need to compensate for this. The current implementation works comparably to the Tcl brute-force stress tester implemented in the fuzzy test in the geo.tcl unit for latitudes between -70 and 70, and is pretty accurate over +/-80 too, with sporadic false negatives. A more mathematically clean implementation is possible by computing the meridian distance at the specified latitude and computing the step according to it.
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- 22 Jun, 2015 2 commits
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antirez authored
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Matt Stancliff authored
Current todo: - replace functions in zset.{c,h} with a new unified Redis zset access API. Once we get the zset interface fixed, we can squash relevant commits in this branch and have one nice commit to merge into unstable. This commit adds: - Geo commands - Tests; runnable with: ./runtest --single unit/geo - Geo helpers in deps/geohash-int/ - src/geo.{c,h} and src/geojson.{c,h} implementing geo commands - Updated build configurations to get everything working - TEMPORARY: src/zset.{c,h} implementing zset score and zset range reading without writing to client output buffers. - Modified linkage of one t_zset.c function for use in zset.c Conflicts: src/Makefile src/redis.c
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