A graph of passes done between players of Real Madrid in the 1st half of the 23.09.2014 game vs. Elche.
fhernand
Based on Mike Bostock's example for a choropleth map and merging states II map
Merges features based on quantized employment level. Adds an svg filter to each merged features level. It also builds the features layer by layer to ensure that shadows seem consistent.
Looks nice, but quite slow to load due to the filters.