enterstudio/geohash-java
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java code for geohashes
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An implementation of Geohashes in pure Java.
The produced hashes, when using character precision (multiples of 5 bits) are compatible
to the reference implementation geohash.org.
You can however also encode Geohashes down to the full available precision of a long i.e. 64 bits.
Building/Testing the code
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The geohash-java code can be built using Apache Ant.
Following targets are available:
- clean # wash dishes.
- compile # compile the main source code.
- test # (default) run the unit tests.
- jar # pack a jar archive with the compiled class files.
- zip # pack a zip archive with the compiled binaries, source code and all other files.
TODO
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Current development involves getting the following things to run:
- a method to find the n closest hashes to any given point.
- find all hashes within a bounding box (possibly including false positives)
Last important changes
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- Fixed issue #2 from Github:
- Neighbouring hashes can be calculated by using the getAdjacent() method, which yields a hashes 8 neighbors.
- northern, eastern, western and southern neighbours can be determined using the respective methods.
- Fixed issue #1 from Github:
- A bug caused different hashes to be yielded sometimes.
License
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This code has been placed under the LGPL. See the LICENSE file for more information.
Please contribute improvements and bug fixes back via github.