gh_encode: Geohash encoding
In geohashTools: Tools for Working with Geohashes

Description Usage Arguments Details Value Author(s) References Examples

View source: R/gh_encode.R

Convert latitude/longitude coordinates into geohash-encoded strings

1	gh_encode(latitude, longitude, precision = 6L)

`latitude`	`numeric` vector of input latitude (y) coordinates. Must be in `[-90, 90)`.
`longitude`	`numeric` vector of input longitude (x) coordinates. Should be in `[-180, 180)`.
`precision`	Positive `integer` scalar controlling the 'zoom level' – how many characters should be used in the output.

precision is limited to at most 28. This level of precision encodes locations on the globe at a nanometer scale and is already more than enough for basically all applications.

Longitudes outside [-180, 180) will be wrapped appropriately to the standard longitude grid.

character vector of geohashes corresponding to the input. NA in gives NA out.

Michael Chirico

http://geohash.org/ ( Gustavo Niemeyer's original geohash service )

# scalar input is treated as a vector
gh_encode(2.345, 6.789)

# geohashes are left-closed, right-open, so boundary coordinates are
#   associated to the east and/or north
gh_encode(0, 0)