MongoDB For Geospatial Data

MongoDB can support the query operations on a geospatial data. Here is some feature of MongoDB’s geospatial:

Geospatial Data: MongoDB store geospatial data in a GeoJson object.

the format of GeoJson object is:

 {

  type: <GeoJSON type>,

  coordinates: <coordinates>

}
        

Here GeoJson type can be Point, LineString, Polygon, MultiPoint, MultiLineString, and MultiPolygon. And coordinates are in the array.
In case of Point as a GeoJson type then the coordinates would be latitude and longitude coordinates, Here longitude first and then latitude. Valid longitude values are between -180 to 180, both inclusive. And Valid latitude values are between -90 to 90, both inclusive.

Example: 

location: {

      type: "Point",

      coordinates: [-73.322037, 50.548557]

}
 

Now if you want to get the data by near by location you can use $near. $near specifies the point in which a geospatial query returns documents from neare to far. $near operator will specify either the GeoJSON point or legacy coordinate point.

example: 

db.user.find(

   {

     location:

       { $near :

          {

            $geometry: { type: "Point",  coordinates: [ -72.2627, 42.28 ] },

            $minDistance: 2000,

            $maxDistance: 6000

          }

       }

   }

);
 

here $minDistance and $maxDistance distance are in meters.