No, it's just a bug. I have been using two sets of data where the name of the co...

		madewulf on Sept 18, 2011 \| parent \| context \| favorite \| on: HTML5 Map of the the World Migrations using SVG, R... No, it's just a bug. I have been using two sets of data where the name of the countries were not perfectly matching (example: United States VS United States of America). I fixed most of the inconsistencies and showed the map to some people to help me spot the problems. This one slipped through (as the geocoding of Serbia and some NaN).

Puerto Rican per-capita income is NaN, by the way.