$minDistance

The $minDistance operator is used in geospatial queries to specify the minimum distance (in meters) that must exist between two points. It's useful for finding locations outside a certain radius.

Syntax

{
  <location field>: {
    $near: {
      $geometry: {
        type: "Point",
        coordinates: [<longitude>, <latitude>]
      },
      $minDistance: <distance in meters>
    }
  }
}

Parameters

Parameter Description
location field The field containing the geospatial data
coordinates An array of [longitude, latitude] specifying the center point
$minDistance Minimum distance in meters from the center point

Example

Using the stores collection, let's find stores that are at least 500 kilometers away from point coordinate [69.7296, 70.1272].

db.stores.find({
  location: {
    $near: {
      $geometry: {
        type: "Point",
        coordinates: [69.7296, 70.1272]  // Proseware Home Entertainment Hub location
      },
      $minDistance: 500000  // 500 kilometers in meters
    }
  }
},
{
  name: 1,
  location: 1
}).limit(2)

The query returns the two stores at least 500Km away from the provided coordinates.

 {
   "_id": "9d9d768b-4daf-4126-af15-a963bd3b88aa",
   "name": "First Up Consultants | Perfume Gallery - New Verniceshire",
   "location": { "lat": 36.0762, "lon": 98.7799 }
 },
 {
   "_id": "76b03913-37e3-4779-b3b8-0f654c1ae3e7",
   "name": "Fabrikam, Inc. | Turntable Depot - Schinnershire",
   "location": { "lat": 37.5534, "lon": 81.6805 }
 }

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