PolyMaps and GeoCommons Data
Final Demo: US Ski Resorts on PolyMaps
Now, lets add some data. I have mentioned GeoCommons before, but I wanted to show how easy it is to find and visualize some interesting data sets from GeoCommons. You could just upload some data to GeoCommons and let them create a map for you but we are going to browse the website for uploaded geo data and make our own map. PolyMaps uses GeoJSON and GeoCommons allows you to transform their data sets into various formats so lets get started.