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[1.1.X] Added another GDAL bug workaround for retrieving the correct …

…coordinate dimension on geometry collections. Refs #12312.

Backport of r12883 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12884 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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commit 8ef5daeb4f0e202b0a653379d8d5dedc5f11a9a9 1 parent 08d0094
Justin Bronn authored

Showing 1 changed file with 8 additions and 0 deletions. Show diff stats Hide diff stats

  1. 8  django/contrib/gis/gdal/geometries.py
8  django/contrib/gis/gdal/geometries.py
@@ -181,6 +181,14 @@ def dimension(self):
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     def _get_coord_dim(self):
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         "Returns the coordinate dimension of the Geometry."
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+        if isinstance(self, GeometryCollection) and GDAL_VERSION < (1, 5, 2):
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+            # On GDAL versions prior to 1.5.2, there exists a bug in which
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+            # the coordinate dimension of geometry collections is always 2:
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+            #   http://trac.osgeo.org/gdal/ticket/2334
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+            # Here we workaround by returning the coordinate dimension of the
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+            # first geometry in the collection instead.
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+            if len(self):
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+                return capi.get_coord_dim(capi.get_geom_ref(self.ptr, 0))
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         return capi.get_coord_dim(self.ptr)
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     def _set_coord_dim(self, dim):

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