A cartogram is a distorted map where the area or other visual encodings are used to represent quantity associated with each region.
Table of Contents
- Wallace, J. W. Population map for health officers. Am. J. Pub. Health 16:1023, 1926
There was another design of cartogram in 1934 by Erwin Raisz (Geographical Review, Vol. 24, No. 2 (Apr., 1934), pp. 292-296) and this also looks like an almost proper treemap.
- Types of cartogram
- election map 2008
- http://www-personal.umich.edu/~mejn/cart/ - source code
- Why we didn’t use a cartogram in the Brexit map - a good summary of argument against the cartogram.