This is the map of Nielen Designated Marketing Areas using D3.js. Hover over for data related to each area.
See map here
See code here
- Map adapted from Mike Bostock's map example
- Original topojson made by converting shapefile from here to topojson via Mike Bostock's instructions
- Shapefile link is dead, an archived Geojson from Geocommons can be found here
- Nielsen rank and TV data via tvb
- Some areas are shaped really strangely (such as a slice of Nevada being part of the Denver media market) but that is really how they are divided