Crate geohash_tools

geohash-tools

geohash-tools is a collection of functions for manipulating GeoHashes in Rust.
You can find more about geohash algorithm on Wikipedia.

Constants

RUNE_INDEX_LEN

Length of rune of possible GeoHash characters -1 to represent the largest index in the rune.

RUNE_LEN

Length of rune of possible GeoHash characters.

Statics

GEOHASH_ID_RANGE

Number of possible GeoHashes for a given precision. All common ranges (0 through 12) are calculated at compile time and can be accessed by using the precision as the index.

RUNE_CHAR_INDEX

Rune of possible GeoHash characters. Values (char) are mapped to their relative index (usize) in the rune.

RUNE_INDEX_CHAR

Rune of possible GeoHash characters. Relative indexes (static str) in the rune are mapped to their values (char).

Functions

geohash_id_range

Calculate the number of possible GeoHashes for a given precision.

geohash_to_int

Convert a GeoHash to an int.
The int range is based on the number of possible combinations of characters from the GeoHash rune.

int_to_geohash

Convert a the previous generated GeoHash int, the geohash_id, back to the GeoHash.
The precision that was used at the time of encoding is needed to correctly convert back to the original GeoHash.