Mongodb sphere2d query - mongodb

Question

Hi i have an collection which contains this object
{
"_id":"53b0807ca004f2ad5f0c9839",
"id":"3427734",
"version":"4",
"timestamp":"2012-08-04T12:06:46Z",
"changeset":"12608469",
"uid":"604523",
"user":"673a",
"fenced":"yes",
"landuse":"cemetery",
"name":"Friedhof St. Peter (Alter Friedhof)",
"poly":{
"type":"Polygon",
"coordinates":[
[
[
8.6763586,
49.5531628
],
[
8.6765129,
49.553132
],
[
8.6763608,
49.5528116
],
[
8.6767028,
49.5527433
],
[
8.6765809,
49.5524866
],
[
8.6770135,
49.5524431
],
[
8.6784924,
49.5520942
],
[
8.6788149,
49.5521769
],
[
8.6789908,
49.5524369
],
[
8.6793862,
49.5525109
],
[
8.6786997,
49.5530378
],
[
8.6779331,
49.5531445
],
[
8.6769458,
49.5532933
],
[
8.6766567,
49.5533521
],
[
8.6764405,
49.5533353
],
[
8.6763586,
49.5531628
]
]
]
}
}
now i'm makeing a query
{
"poly":{
$geoIntersects:{
$geometry:{
"type":"Polygon",
"coordinates":[
[
[
-180.0,
90.0
],
[
180.0,
90.0
],
[
180.0,
-90.0
],
[
-180.0,
-90.0
],
[
-180.0,
90.0
]
]
]
}
}
}
}
but it does not return the object.. it returns nothing. Any ideas why?

Answer 1

The GeoJson object that you passed is not acceptable. I changed the query parameter a little bit and it now works. As you have already understood now that the GeoJson object should fit within one hemisphere. If you need some demonstration of the $geoIntersect functionality of MongoDB, you can run the following query and see that it gives your polygon in the results:
db.Test.find({
"poly":{
'$geoIntersects':{
'$geometry':{
"type": "Polygon",
"coordinates": [
[
[
8.6763586,
49.5531628
],
[
8.6788149,
49.5521769
],
[
8.6786997,
49.5530378
],
[
8.6763586,
49.5531628
],
[
8.6763586,
49.5531628
]
]
]
}
}
}
});

Answer 2

Seems that my query won't work, i found this in the docs:
http://docs.mongodb.org/manual/reference/operator/query/geoIntersects/
Note
Any geometry specified with GeoJSON to $geoIntersects queries, must fit within a single hemisphere. MongoDB interprets geometries larger than half of the sphere as queries for the smaller of the complementary geometries.
i can only query fopr the right hmisphere
{
"poly":{
$geoIntersects:{
$geometry:{
"type":"Polygon",
"coordinates":[
[
[
1.0,
90.0
],
[
180.0,
90.0
],
[
180.0,
-90.0
],
[
1.0,
-90.0
],
[
1.0,
90.0
]
]
]
}
}
}
}