I have been testing CartoDB for a little while and I can't get maps by postal codes in Spain. The system says "no polygon data available for your selection".
But then I see some maps for Spain including postal code polygons. For example https://dgonzaco.cartodb.com/tables/sppodemos/public/table
Entering the table I see getJSON data containing the polygon data. Is this getJSON data generated by CartoDB, or is it needed to add it manually?