>>> ls.srs.name 'WGS 84' >>> srs.units (0.017453292519943282, 'degree') >>>ls.length 0.88329271346608429
So how do I go from degrees to miles? According to the docs, Distance does not handle 'degrees' as a unit. Should I somehow convert to another srs before I calculate distance? Or is there a better way? On Oct 12, 2:53 am, Jani Tiainen <rede...@gmail.com> wrote: > HARRY POTTRER kirjoitti: > > > > > I have a model which represents a route. I can use the `make_line()` > > geoqueryset method to create a LineString like so: > > >>>> r = Route.objects.get(pk=33) > >>>> # a route from Seattle to New York to Miami, a total distance > >>>> # of about 3043.8 nautical miles > >>>> r > > <Route: KSEA-KLGA-KMIA> > >>>> # a collection of the airports used in the route > >>>> # turned into a LineString > >>>> ls = Airport.objects.filter(routebase__route=r).make_line() > >>>> ls > > <LineString object at 0x2cd42e0> > > > How can I find the total distance of that LineString object, so that > > it returns a Distance object that I can then convert to nautical > > miles? the .length() method here just returns a float, which is in who- > > knows-what units... > > It's exactly in the units that are specified in your SRS definition. To > go beyond that you can use Distance to make math and conversions to > another units.. > > Note that "length" gives linear distance, not spherical so in long > distances you get a distorted length. > > -- > Jani Tiainen --~--~---------~--~----~------------~-------~--~----~ 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 django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
