Ball State University

The University Libraries’ mission is to support student pursuits for academic success and faculty endeavors for the creation of knowledge.


The Ozone Secretariat is the Secretariat for the Vienna Convention for the Protection of the Ozone Layer and for the Montreal Protocol on Substances that Deplete the Ozone Layer.

California Water Science Center

The U.S. Geological Survey, California Water Science Center provides reliable, impartial, foundational data and scientific analysis to address water issues facing California today.

Hungarian Central Bureau of Statistics

The Hungarian Central Statistical Office is responsible for collecting, processing and publishing statistics about Hungary, its economy, and its inhabitants.

The example, choropleth map, provides a quarterly overview of Budapest, as well as the development of the socio-economic situations within the 19 counties. A choropleth map is a perfect choice to illustrate the continuous statistical surface.

Check out more choropleth map demos.