Question

I’ve created geospatial index on my collection using the statement with PyMongo :

self.geo_collection.create_index([('location',pymongo.GEO2D)],\
         min=0,max=700,name='test_name')

but when I try to execute the following query :

{'_id': ObjectId('4fa739422d38036937000000'), 'location': {'$within': {'$polygon': [[165, 10], [165, 90], [290, 10], [290, 90]]}}}

I always get a

database error: point not in interval of [ -180, 180 )

Can anybody help me figure out what’s going on? Thanks.

Answer 1

Geospatial indexing works as advertised. To use $polygon you will have to have mongodb version 1.9 or greater. I ran the following script on mongodb 2.0.4 without any problems

import pymongo

db = pymongo.Connection().foo
db.foo.create_index([("loc","2d")], min=0, max=700, safe=True)
db.foo.insert({"loc":(180, 50)}, safe=True)
db.foo.insert({"loc":(240, 490)}, safe=True)
db.foo.insert({"loc":(240, 530)}, safe=True)
polygonA = [ [ 165, 10 ], [ 165, 90 ], [ 290, 10 ], [ 290, 90 ] ]
for doc in db.foo.find({"loc":{"$within":{'$polygon':polygonA}}}):
    print doc

with the following result

{u'loc': [180, 50], u'_id': ObjectId('4fa7b47c81dde04973000000')}