From pixelized to curvy lines

Fork of E. Meeks’ work. An example of how to project coordinates of geodata features and then use those for d3.svg.line to take advantage of built-in line interpolators.

Improvements: minors, for code readability, dataviz display.

See also :

• Lopez Hugo, Elijah Meeks’s D3js-Topojson : how to move from pixelized to Bézier curves?
• Elijah Meeks’s blocks answer.
• Mike Bostock’s Spline Editor, displaying various line interpolation.