That is not trival, but it can be done. Perhaps theis will help http://code.google.com/p/geomodel/
Basically you break the earth up into cells. If you want to do a km radius search, you limit to the cells you want, and then do an in memory filter on the result. On Sep 14, 2:07 pm, mar_novice <[email protected]> wrote: > Im new to geopt datatype and my question is how can i query the > entities that is with-in 2km distance from a given entity. For > example, I have a building name BigBuilding with a geopt X and in my > datastore, I already have many buildings with a geopt in its field. > How can i determine the buildings that is with-in the 2km radius of > BigBuilding. Anyone can provide some tips and suggestions on how to > implement this?? > > Thanks in advance. > > -mar_novice --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~----------~----~----~----~------~----~------~--~---
