MarkerCluster for v3 Documentation: Examples. To use a marker clusterer, create a MarkerClusterer object.
In the simplest case, just pass a map to it. You may also specify a number of options to fine-tune the marker manager's performance. These options are passed via a object. Once you create a marker cluster, you will want to add markers to it.
How to Use Directions with Google Maps API V3. NOTE: This article is old, and the methods to insert directions have changed — this probably won’t work.
Google Maps are more fun when you can get directions. And now you can! The recent release of the Google Maps API adds two new classes in order to enable directions. In this article I will show you how to add an input field in an infobox and use that to render a route. Google Maps Marker Clustering (Marker zusammenfassen)