geodjango

Trying to install a GeoDjango on my machine. I'm really new to Python and being brought into a project that has been a very tricky install for the other team members. I installed Python 2.7 and GEOS using brew, and running PSQL 9.2.4 but keep getting this error when I try to get the webserver running: __import__(name) File "/Users/armynante/Desktop/uclass-files/uclass-env/lib/python2.7/site packages/django/contrib/gis/geometry/backend/geos.py", line 1, in <module> from django.contrib.gis.geos import ( File "/Users/armynante/Desktop/uclass-files/uclass-env/lib/python2.7/site packages/django

Prologue: This is a question arising often in SO: Equivalent of PostGIS ST_MakeValid in Django GEOS Geodjango: How to Buffer From Point Get random point from django PolygonField Django custom for complex Func (sql function) and can be applied to the above as well as in the following: Django F expression on datetime objects I wanted to compose an example on SO Documentation but since it got shut down on August 8, 2017, I will follow the suggestion of this widely upvoted and discussed meta answer and write my example as a self-answered post. Of course, I would be more than happy to see any

Hi Stackoverflow people, I do my first steps with GeoDjango and I am looking for better options to check faulty sql statements. So far, I simply wanted to safe a lng+lat point in my postgresql table. The model is defined with: geolocation = models.PointField(_('Geo Location'), geography=True, null = True, blank = True, help_text=_('Geolocation with Longitude and Latitude')) objects = models.GeoManager() In my view, I try to execute the following command savedProject.geolocation = GEOSGeometry('POINT(%s %s)' %(u_lng,u_lat)) but I receive the following error when I try to save the form:

I have just started my first project on GeoDjango. As a matter of fact, with GeoDjango powered Admin application we all have a great possibility to view/edit spatial data, associated with the current object. The problem is that after the objects having been populated I need to render several objects' associated geometry at once on a single map . I might implement it as a model action, redirecting to a custom view. I just don't know, how to include the OpenLayers widget in the view and how to render there my compound geometry from my GeoQuerySet. I would be very thankful for any hint from an

I'm using the "buffer" method from the GEOS API to create a circle based on a point and a radius in GeoDjango, according to this answer: GeoDjango: How to create a circle based on point and radius As one commenter noted, you'll have to convert the radius in km to degrees... but how? I guess it's a quick formula but it's greek to me. I'd be grateful for any pointers. The answer may depend upon location on earth. Near the equator, 1km is going to equal roughly 0.008 degrees (1 km / 40,000 km * 360 degrees) of latitude and longitude, but near the poles, 1km is going to equal roughly 0.008 degrees