GeoHash C Library
C Perl CMake Shell
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debian
include/geohash
scripts
src
tests
.gitignore
CMakeLists.txt
LICENSE
README
cmake_uninstall.cmake.in
package.sh

README

=======================================================================
 INSTALL
=======================================================================

 1. cd build
 2. cmake .. -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=Release

 parameters
    - BUILD_SHARED_LIBS (ON|OFF)
    - CMAKE_BUILD_TYPE (Debug|Release)
    - CMAKE_INSTALL_PREFIX (/usr/local)

3. make
4. make test
5. make install


Or just simply,

perl ./scripts/install

=======================================================================
 USAGE
=======================================================================

#include <geohash.h>

/* Get Hash */
char *hash;
hash = GEOHASH_encode(latitude, longitude, length);
...
free(hash);


/* Get Area by Hash */
GEOHASH_area *area;
area = GEOHASH_decode("dqcw5");

/* You can get the range of both latitude and longitude

area->latitude.max;
area->latitude.min;
area->longitude.max;
area->longitude.min;

*/
GEOHASH_free_area(area);


/* Get Adjacent Hash by Origin's Hash and Direction*/
char *adjacent_hash;
/* You can choose direction from GEOHASH_NORTH, GEOHASH_SOUTH, GEOHASH_EAST, and GEOHASH_WEST */
adjacent_hash = GEOHASH_get_adjacent("dqcw5", GEOHASH_NORTH);
...
free(adjacent_hash);



/* Get Neighbors' Hash by Origin's Hash */
GEOHASH *neighbors;
neighbors = GEOHASH_get_neighbors("dqcw5");

/* You can get hashes of each direction's neighbor
neighbors->north;
neighbors->north_east;
neighbors->north_west;
neighbors->south;
neighbors->south_east;
neighbors->south_west;
neighbors->east;
neighbors->west;
*/
GEOHASH_free_neighbors(neighbors);