I'm really new to GeoDjango myself, and I agree that jumping right in is a bit of a shock. Hopefully someone more knowledgeable will also pipe-up, but I think I can start you off in the right direction.
On Apr 14, 9:43 pm, Alex Ezell <[EMAIL PROTECTED]> wrote: > The system would then show them trips which have start, end, or both > points in common with the locations they have entered in the search. > "In common" being defined as within a radius of say 100 miles or so. If I understand your question correctly, you're only interested in the start and end points and not the points along that line between the two. So define a regular model with a ``PointField`` [1] to hold the lat/long for a location and make sure to use a ``GeoManager`` [2] for that model. I've been using GeoPy [3] to obtain lat/long from addresses and zipcodes. If you need to do complex lookups that you would normally use a ``Q`` object for, make sure to use a ``GeoQ`` object [4] instead. Once you've done that and have a few items in your database you can query proximity pretty easily [5]. You can search for other points in the database that are within a certain radius using a regular queryset filter like ``yourmodel.objects.filter(point__distance_lte=(STARTINGPOINT, D(mi=100))``. If you want to return the distance between your starting point and a bunch of objects use the ``distance()`` manager method [6]. Also, I've found the built-in Distance measure functions [7] really helpful for doing conversions. .. [1] http://code.djangoproject.com/wiki/GeoDjangoModelAPI#FieldTypes .. [2] http://code.djangoproject.com/wiki/GeoDjangoModelAPI#GeoManager .. [3] http://exogen.case.edu/projects/geopy/ .. [4] from django.contrib.gis.db.models import GeoQ .. [5] http://code.djangoproject.com/wiki/GeoDjangoDatabaseAPI#DistanceLookups .. [6] http://code.djangoproject.com/wiki/GeoDjangoDatabaseAPI#distance .. [7] http://code.djangoproject.com/wiki/GeoDjangoExtras#Measure So I just mentioned three completely different parts of GeoDjango all named "distance", hopefully I didn't confuse you even more! :-P Good luck. - whiteinge --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
