On 13 June 2010 06:24, Tyler Andersen <[email protected]> wrote: > I'm trying to figure out how to take two Point objects and determine > the distance between them. > > It seems that it is trivial to search the DB (well, provided that I'm > not using mySQL, which I am) to filter by distance, however, that's > not what I'm looking for at the moment. > > I have a set of Point objects, and I'd like to compute the distance in > miles for each. > > For Point objects a, b, one can "a.distance(b)", however, a number is > returned not a Distance object. I'm having trouble finding > documentation on what this value represents (I could perhaps plug it > into D(????=a.distance(b)).mi).
Try this query on the Geodjango list: http://groups.google.com/group/geodjango But to try and answer your question: Are you trying to get the distance of a set of objects from a point? So for example, say you were looking for houses from a railway station? Or are you looking at finding the distance between each of a set of points that have an order? Like waypoints on a path? As for what metric it returns, I'd say have a look at the documentation here: http://docs.djangoproject.com/en/dev/ref/contrib/gis/db-api/#distance-lookups Hope that helps, Cheers, Dan > > -- > You received this message because you are subscribed to the Google Groups > "Django users" 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/django-users?hl=en. > > -- Dan Hilton ============================ www.twitter.com/danhilton www.DanHilton.co.uk ============================ -- You received this message because you are subscribed to the Google Groups "Django users" 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/django-users?hl=en.
