Re: GeoDjango: default 4326 SRID doesn't work for transform()

Sorry, i forgot to mention that this is the model field I am
retrieving user's locations from:

location = geomodels.PointField(null=True, blank=True)

which comes back as:

POINT(longitude, latitude)

and we are using a PostGreSQL database.

On Aug 29, 6:45 pm, kyleduncan <kyledun...@hotmail.com> wrote:
> Hi all,
>
> I am trying to do obtain the distance between two users on my site,
> using code I found in this group. We already have geoDjango installed,
> though i'm wondering if my problem comes from being on an old version
> (i dont know which version we're using - if somebody could tell me how
> to check that would be great). We are running Django 1.1
>
> the code i am using is:
>
> from django.contrib.gis.geos import Point
> from django.contrib.gis.measure import D
>
> my_location = request.user.get_profile().location
>             their_location = other_user.get_profile().location
>
>             my_location.transform(4326)
>             their_location.transform(4326)
>             distance = my_location.distance(their_location)
>
>             if request.user.get_profile().get_preferences().use_metric
> == 1:
>                 distance_result =
> round(D(m=my_location.distance(their_location)).km, 1)
>             else:
>                 distance_result =
> round(D(m=my_location.distance(their_location)).mi, 1)
>
> the last section is just a check to see whether the user wants the
> result in miles or km. the bit that's troubles me is the transform()
> section. if i put in 4326, i just get 0.0 as the result. if i put in
> nothing so it's just transform() (which i understand should use 4326),
> i get this django Error:
>
> TypeError at /members/GayHopHelper/
>
> transform() takes at least 2 arguments (1 given)
>
> the only thing that works so far is using SRID 32140, which is for
> south texas. the results seem ok but definitely a bit inaccurate,
> which is to be expected.
>
> i'm not a Django export at all so maybe this all just comes from being
> on an old version of GeoDjango and i need to upgrade. if that's all it
> is then sorry for wasting time (i'm not a sys admin and dont know much
> about Django so cant upgrade myself easily).

--
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+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/django-users?hl=en.