mongodb geoNear 使用记录
lidashuang -需要,查询一个坐标点的附近位置
数据格式可以用数组或者geojson的形式
<field>: [ <x>, <y> ]
<field>: [<longitude>, <latitude> ]
GeoJSON
location: {
type: "Point",
coordinates: [-73.856077, 40.848447]
}
先列出经度,然后再列出纬度
比如 loc 字段
{
"city": "北京市",
"geo_id": 565932,
"geo_name": "万柳园(长春堂药店)",
"lat": 39.850201868495773283,
"lng": 116.33426020654366084,
"loc": "[116.33426020654366084,39.850201868495773283]",
"status": 0
}
索引创建 2dsphere 索引
2dsphere索引支持查询球面几何实体对象
db.collection.createIndex( { <location field> : "2dsphere" } )
pymongo查询例子
lng = geo['lng']
lat = geo['lat']
result = geos_collection.aggregate([
{"$geoNear": {
"near": {
"type": "Point",
"coordinates": [lng, lat] },
"distanceField": "distance",
"maxDistance": 2000,
"query": {"status": -1},
"spherical": True }
},
{"$limit": 10}
])
mongodb shell
db.o2o_geos.aggregate([
{
$geoNear: {
near: { type: "Point", coordinates: [120.13606048541625171, 30.29447292933346958 ] },
distanceField: "distance",
maxDistance: 2000,
query: { status: -1 },
spherical: true
}
}
])
coordinates 查询的坐标点maxDistance 最大距离query 过滤条件linkshttps://docs.mongodb.com/manu...https://docs.mongodb.com/manu...https://docs.mongodb.com/manu... 特别申明:本文内容来源网络,版权归原作者所有,如有侵权请立即与我们联系(cy198701067573@163.com),我们将及时处理。