Here's a more concrete example, say I am storing shapes of all countries. Now, the US can't be stored in one polygon (we have hawaii and alaska), therefore I have to store the many polygons in one geometrycollection.
Now, say I have another point on the map, I would like to know how ar it is from ANY of the polygons... On Tue, Jan 31, 2012 at 8:41 PM, Alex Kopp <loafer...@gmail.com> wrote: > Perhaps I didn't explain it well, Jeff. I am just trying to get the > smallest distance from one point to any of the points, lines, or polygons > inside of a queryset. The data I am receiving from the queryset is a > geometrycollection already... That is how it is being stored in the > database. > > On Tue, Jan 31, 2012 at 8:36 PM, Jeff Heard > <jefferson.r.he...@gmail.com>wrote: > >> You should be able to create a geometrycollection object from a queryset >> (you may have to use a list comprehension for this), then calculate the >> centroid and take the distance from that. Taking the distance from the edge >> should only be a little more >> Complicated. Check the django GEOS API docs For complete details >> >> >> >> On Jan 31, 2012, at 6:36 PM, Loafer <loafer...@gmail.com> wrote: >> >> > I have a model that currently stores a Geographic Point (Using Django >> > GIS (GeoDjango)) and another model that has a field to store a >> > geometry collection (A collection of polygons, lines, and or points). >> > >> > I am trying to find the distance from the point to any one of the >> > shapes in the geometry collection. Apparently the distance function >> > only works on single shapes, not a collection. Are there any >> > workarounds to this? >> > >> > Any help is appreciated. >> > >> > Thanks. >> > >> > -- >> > 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. >> > >> >> -- >> 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. >> >> > -- 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.
