This series in three volumes considers maps as constructions resulting from a number of successive transformations and stages integrated in a logical reasoning and an order of choices. Volume 1 introduces the basis of thematic cartography; the map is regarded as a construct due to transformation processes. Volume 2 focuses on the impact of the quantitative revolution, partially related to the advent of the computer age, on thematic cartography. Volume 3 is exclusively focused on the new approaches on thematic cartography offered by the three successive revolutions affecting the discipline: digital, multimedia and the Internet.