Visualizing OpenStreetMap history
I’m working with Martijn and Vincent on a way to visualize the history of OpenStreetmap data for their analysis of the ‘crowd-quality’ of the data. I used my favorite visualization tool Processing to visualize the history of one node:
The red circle is the final location of the node and the path is the order of changes. You can see that the first changes were much more rough than the last ones.
I also did the same for an entire way, where the way itself is shown in blue and the versions of the nodes are shown next to the nodes.
The trouble is that it is currently quite difficult to get the full (spatial) history of an area in OpenStreetMap. Once we find a way to do so I hope to generate more and play a bit with different visualization styles and methods.