我从Google地图手动获得了钦奈和班加罗尔城市的坐标,并将其插入到我的数据库中。对于班加罗尔市,$ geoIntersect可以完美地工作。但是,出于某种原因,钦奈市没有出现。不知道我在哪里/想念什么。在
下方附加我的代码班加罗尔城市详情
{
"_id" : ObjectId("5b2d45ef4b511713052b49f9"),
"cityId" : 10256,
"countryEn" : "india",
"countryAr" : "india ar",
"provinceEn" : "Bangalore",
"provinceAr" : "Bangalore ar",
"cityEn" : "Bangalore",
"cityAr" : "Bangalore ar",
"lat" : 12.972442,
"lon" : 77.580643,
"countryCode" : "+91",
"population" : 150257,
"boundaries" : {
"coordinates" : [
[
[
77.747618,
13.105034
],
[
77.758604,
13.039487
],
[
77.816283,
12.959201
],
[
77.825896,
12.853452
],
[
77.742125,
12.884244
],
[
77.700926,
12.797213
],
[
77.461973,
12.783821
],
[
77.412535,
12.911017
],
[
77.390562,
13.047514
],
[
77.525145,
13.150506
],
[
77.636381,
13.155855
],
[
77.747618,
13.105034
]
]
],
"type" : "Polygon"
}
}
我使用过的查询
db.Cities_Master.find({
boundaries: {
$geoIntersects: {
$geometry: { type: 'Point', coordinates: [77.5476, 13.105034] },
},
},
})
钦奈城市详细信息
{
"_id" : ObjectId("5b2d4a734b511713052b4a01"),
"cityId" : 10255,
"countryEn" : "india",
"countryAr" : "india ar",
"provinceEn" : "chennai",
"provinceAr" : "chennai ar",
"cityEn" : "chennai",
"cityAr" : "chennai ar",
"lat" : 13.067439,
"lon" : 80.237617,
"countryCode" : "+91",
"population" : 150257,
"boundaries" : {
"coordinates" : [
[
[
80.309211,
13.257326
],
[
80.332557,
13.241285
],
[
80.332557,
13.249305
],
[
80.295478,
13.091519
],
[
80.248786,
12.838584
],
[
80.149909,
12.880089
],
[
80.097724,
12.936309
],
[
80.123816,
13.14368
],
[
80.320197,
13.199841
],
[
80.178748,
13.2092
],
[
80.239173,
13.215885
],
[
80.309211,
13.257326
]
]
],
"type" : "Polygon"
}
}
我曾经找到过钦奈的查询
db.Cities_Master.find({
boundaries: {
$geoIntersects: {
$geometry: { type: 'Point', coordinates: [80.309211, 13.257326] },
},
},
})
对于Chennai查询,我没有找到记录。我是否以错误的方式或其他问题插入了坐标?任何帮助,将不胜感激。谢谢
答案 0 :(得分:2)
Bangalore City
坐标由有效的闭合多边形表示,这就是MongoDB查询起作用的原因。在Chennai
中,坐标顺序不正确。您可以轻松检查它here:
因此,为了解决此问题,您可以在数据库中对不正确的coordinates
重新排序。 Chennai
的有效文档可能如下所示:
db.Cities_Master.save({
"_id" : ObjectId("5b2d4a734b511713052b4a01"),
"cityId" : 10255,
"countryEn" : "india",
"countryAr" : "india ar",
"provinceEn" : "chennai",
"provinceAr" : "chennai ar",
"cityEn" : "chennai",
"cityAr" : "chennai ar",
"lat" : 13.067439,
"lon" : 80.237617,
"countryCode" : "+91",
"population" : 150257,
"boundaries" : {
"coordinates" : [
[
[
80.309211,
13.257326
],
[
80.332557,
13.249305
],
[
80.332557,
13.241285
],
[
80.320197,
13.199841
],
[
80.295478,
13.091519
],
[
80.248786,
12.838584
],
[
80.149909,
12.880089
],
[
80.097724,
12.936309
],
[
80.123816,
13.14368
],
[
80.178748,
13.2092
],
[
80.239173,
13.215885
],
[
80.309211,
13.257326
]
]
],
"type" : "Polygon"
}
})
可以here进行预览。在这种情况下,您的查询可以正常工作。