Some time ago I mentioned a tutorial illustrating an approach that could be used to implement high-speed MapKit annotation clustering.
Here’s a library from Claus Höfele that builds upon the previously mentioned tutorial providing a MapKit annotation clustering library that you can drop into your apps called CCHMapClusterController.
In addition to being high performance CCHMapClusterController allows you to easily adjust the size of the map area for clustering, provides an easy syntax for customizing annotations, provides an easy syntax for finding an annotation within a cluster, and some animations for extra polish.
You can find CCHMapClusterController on Github here.
There’s an included example, and you can also download a free app that shows of the performance of the library.
A great library if you’re looking to implement annotation clustering in an app utilizing MapKit.
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