On: Mapping with D3

[ericfrigot]

Concerning the size of the json file with geo path, I don't know if you can rename the attributes, but you can save 300ko just by using simplified coordinates ("-86.411786" becomes "-86.4"). I don't think you need sub-pixel precision :)

[tgasson → ericfrigot]

That's actually something topojson will do for you. It stores a translate and scale value that fits so all the values can be simple integers.