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Creating Leaflet tiles

I just published another blog post: “Creating Leaflet Tiles from Open Data using PostGIS and QGIS”.

This one’s a tutorial for using open geospatial data sets like the Microsoft US Building Footprints data into slippy map tiles – images stored in z/x/y.png file structure formats – that can be used in web mapping libraries like Leaflet and OpenLayers.

Coincidentally, The New York Times just published a cool interactive feature derived from the same data set: “A Map of Every Building in America”

Near the end the blog post has a few links to some sources for open geospatial from various cities. A few good ones are: