QlikTech takes no responsibility for any code and QlikTech Support Agreement does not cover issues with this extension.
Please review Googles license agreement before you put this into production.
Load a set a coordinates into QlikView and visualize them together with this extension. The clustering feature is create when you have alot of data points and needs to group/cluster them together for greater visability and performance.
The maxzoom property defines at what zoom level you want your markers clustered. The grid size property controls how big or small cluster grid size you want.
You can either use the extension 'as is' or use it as a base to further customize it to fit your needs.