The goal of YM4R is to ease the use of the Google Maps and the Yahoo! Maps Building Block API's from Ruby and Rails. Lately support for the Mapstraction library has also been added. It is split int mutiple parts: The YM4R/GM plugin for Rails: It helps the use of the main Google Maps API from Rails applications. It is engineered to easily permit updates to the map using RJS. It also bundles a few a
