This plugin provides helpers for the other DokuWiki Spatial plugins such as spatial indexing, SEO and a search action. Currently the search action needs a geohash1), support for a lat/lon pair or a pagename is in the pipeline. See the tracker for all requested features.
A search url will look something like this (examples below):
The length (number of characters) of the geohash actually determines the search area, the more characters you strip off the end the larger the search area becomes, that is
u1 is a larger area than
More information is available at the DokuWiki plugin site.