$geoIntersects (Geometry Intersects)

Last updated: 2026-10-09

$geoIntersects (Geometry Intersects)

$geoIntersects finds documents whose GeoJSON geometry intersects the given geometry. `{ loc: { $geoIntersects: { $geometry: { type: 'Polygon', coordinates: [...] } } } }`. Unlike $geoWithin (point-in-area), $geoIntersects tests whether two geometries — points, lines, or polygons — intersect. Requires a 2dsphere index.

📝 Syntax

{ <location field>: { $geoIntersects: { $geometry: <GeoJSON geometry> } } }

⚙️ Parameters

Returns：Cursor of matching documents

▶ Example

Run the commands below in your local mongosh (requires a running mongod):

// $geoIntersects: stops intersecting a route
db.stops.find({
  loc: { $geoIntersects: {
    $geometry: { type: 'LineString', coordinates: [[0, 0], [1, 1]] }
  } }
})

Output：

// Returns stops intersecting the LineString (e.g. a point on the segment)

📌 Notes

• Unlike $geoWithin it handles line-polygon and polygon-polygon intersection
• Requires a 2dsphere index and GeoJSON coordinates
• Results are not sorted

🏷️ Related Tags

💡 Related Cases

📚 Related Tutorials

❓ FAQ

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