(Cleaning up for CQL3 interface using DataStax driver)
Let's say you have a large amount of Geo data. Let's say it's GPS data from thousands of autonomous drones mapping geo areas around the country. Or it could be something boring like a truck fleet positional information.
Either way, it's lots and lots of data in the form of Coordinates associated with some kind of value. And now that you have gazillion geo data, you want to visualize this data. A heatmap, perhaps.
If the data is relatively small as in up to a few hundred K's, you can simply put this into a heatmap and it'll probably work.