Please find below some supplementary material for the paper The detection of "hot regions" in the geography of science: A visualization approach by using density maps by Lutz Bornmann and Ludo Waltman (paper, preprint):

Other material and software can be found elsewhere on the web:

Some examples of geographical density maps are shown below. We refer to our paper for more information on these examples.

Our maps can also be viewed using Google Earth. The following maps are available:

To view a map, download the ZIP file, unpack it, and open the resulting KMZ file in Google Earth.

Highly cited publications in biochemistry, genetics & molecular biology in 2007
Density map of the top 1% highly cited publications in biochemistry, genetics & molecular biology in 2007 (based on Scopus data).

Highly cited publications in physics & astronomy in 2007
Density map of the top 1% highly cited publications in physics & astronomy in 2007 (based on Scopus data).

Nature and Science publications in 2007
Density map of Nature and Science publications in 2007 (based on Web of Science data).

Nature and Science publications in 2009
Density map of Nature and Science publications in 2009 (based on Web of Science data).