A set of examples using Kartograph.
Setup a virtual environment (instructions are using virtualenvwrapper).
mkvirtualenv kartograph-example
workon kartograph-example
Install the python packages (Kartograph.py).
pip install -r requirements.txt
For counties. We need to convert to 4326 (lat/lon) as Kartograph.py seems to like that. (We used MapShaper to simplify shapes a bit)
ogr2ogr -t_srs EPSG:4326 data/mn-county-2010/shp-dp-60-proj-4326/county2010.shp data/mn-county-2010/shp-dp-60/county2010.shp
cd data/mn-county-2010 && kartograph mn-county-2010.json -o svg/mn-county-2010-dp-60.svg; cd -;