查询多边形$ geowithin $ box mongodb不返回任何内容 [英] Query polygons $geowithin $box mongodb doesn't return anything

问题描述

伙计们我正在尝试通过边界框查询内部的所有多边形，但是它只是返回0.它应该返回许多多边形！

Guys I am trying to query all the polygons inside by bounding box but it simply returns 0.. It should be returning many polygons!

或者，我尝试查询更大的边界框，但没有任何反应！

Alternatively I try to query a much larger bounding box and nothing happens!

我的查询是:

{
 geometry: 
    { $geoWithin: 
        { $box:  
            [ [-73.995762,40.764826], [-73.934034,40.802038] ] 
        } 
    }                       
}

请注意，对于类型为Point

推荐答案

答案如下:

$ box可以与GeoJSON一起使用，但不能与多边形一起使用！您需要使用$ box生成几何.

$box do work with GeoJSON, but not with polygons! You need to generate a geometry with the $box instead.

此外，它始终必须具有起点和起点，因此4点多边形将具有 5个坐标元组

Also, it always has to has the start point and point, so a 4-point polygon will have 5 coordinate tuples

但是变得更复杂，它必须遵循右手规则(逆时针).

BUT it gets trickier, it has to follow the right hand rule (anticlockwise).

使用$ BOX和点测试GEOJSON

TESTING GEOJSON WITH $BOX AND POINTS

我的查询{geometry:{$ geoWithin:{$ box:[[-71.934034,38.764826]，[-75.995762,43.802038]]}}}

my query {geometry: { $geoWithin: { $box: [ [-71.934034,38.764826], [-75.995762,43.802038] ] } }}

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