 readme  id readmetxt v 1127 20101010 101413 antoniodemarco exp openlayers proximity openlayers proximity enables geographical proximity search for the openlayers module views integration openlayers proximity exposes square filter it gives locations contained within a square derived by a simple latitude longitude comparison less accurate better performance greatcircle filter it uses the greatcircle distance formula to return locations within a circular area more accurate lower performance distance sort criteria used in combination with greatcircle filters it allows to sort nodes by distance from a given location distance field used in combination with greatcircle filters it shows distance from a given location both filters can measure distance from a location or from another node configuration after enabling the module is necessary to build the proximity index table by visiting admin build openlayers proximity this has to be done only the first time since it will index all existing nodes the module will automatically index newly created nodes if you plan to show proximity search results on a map using exposed filers remember to add them in both your openlayers map and openlayers data display more at http drupalorg node 789668 rules integration rules integration http drupalorg project rules gives the possibility to notify nodes that something has happened near them openlayers proximity exposes the notify nodes based on geographic proximity action which in turn triggers the node is notified based on geographic proximity event for all nodes falling into the action s proximity filter possible use cases are notify all authors that a new content has been posted close to their content change node proprieties based on proximity  