$ near需要geojson点，给定geojson点 [英] $near requires geojson point, given geojson point

问题描述

我有一些文档，其中包含如下所示的地理位置字段.

I have documents which contain a geo field like the below.

"geo" : {
    "type" : "Point",
    "coordinates" : [
        37.44609999,
        -121.88355687
    ]
},

我创建了一个空间索引，如下所示.

I have created a spatial index, proof below.

db.collection.getIndexes()
[
    {
        "v" : 1,
        "key" : {
        "_id" : 1
        },
        "ns" : "db.collection",
        "name" : "_id_"
    },
    {
        "v" : 1,
        "key" : {
        "geo.coordinates" : "2dsphere"
        },
        "ns" : "db.collection",
        "name" : "geo.coordinates_2dsphere"
    }
]

但是，当我执行以下查询时(MongoDB手册中的详细内容).

However when I execute the following query (verbatim from the MongoDB manual ).

db.collection.find( { 'geo.coordinates': { $near: 
                                            { $geometry :
                                                { type : "Point", 
                                                  coordinates: [ 37.44609999, -121.88355687 ] } }, 
                                                  $maxDistance: 1000
                                         } } )

我收到以下错误消息.

error: {
    "$err" : "$near requires geojson point, given { type: \"Point\", coordinates: [ 37.44609999, -121.88355687 ] }",
    "code" : 16681
}

有人能启发我为什么吗?

Can someone enlighten me as to why?

推荐答案

这样翻转点:

"geo":{ "type":"Point"， 坐标":[ -121.88355687， 37.44609999 ] }

"geo" : { "type" : "Point", "coordinates" : [ -121.88355687, 37.44609999 ] },

否则，请检查您的坐标以查看它们是否为实: http://geojsonlint.com/

Otherwise, check your coordinates to see if they are real: http://geojsonlint.com/

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