In this leaflet example. When hovered over a cluster marker, it shows the bounding area of the clustered features which is known as convex hull.

Is there a way to reproduce it with OpenLayers?

  • 1
    The example is impressive, but I'm afraid there's no such tool available in openlayers. You have to implement the algorithm by yourself.
    – mfdev
    Commented Sep 12, 2013 at 14:17

3 Answers 3


For anyone who ends up here, there is an OL extension which mimics the same functionality as Leaflet. https://github.com/Viglino/ol-ext

For demo example see: https://viglino.github.io/ol-ext/examples/geom/map.convexhull.html

  • ol-ext extension from example does not work in IE11, since it uses ES6 syntax.
    – TomazicM
    Commented Feb 8, 2019 at 15:48

No, there are no tools yet for this purpose.


Computing a Convex Hull is possible in OpenLayers by using the external JSTS library. Although I haven't tried its implementation for convex hull, I have used it to create buffer/union etc.

For more please go to this url also here you will find its implementation.

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