Cartograms are a well-known technique for showing geography-related statistical information, such as population demographics and epidemiological data. The basic idea is to distort a map by resizing its regions according to a statistical parameter, but in a way that keeps the map recognizable. In this paper, we deal with the problem of making continuous cartograms that strictly retain the topolo...

This paper presents a new perspective of national power—sustainable national power (SNP)—emphasizing both the traditional comprehensive national power (CNP) and social and environmental sustainability. We propose a measurement to quantify the SNP based on the measurement of comprehensive national power and a sustainable adjusted index. In addition, density-equalizing maps are adopted to visuali...

Cartograms are map-based data visualizations in which the area of each map region is proportional to an associated numeric value (e.g., population or gross domestic product). A cartogram called contiguous if it conforms this principle while also keeping neighboring regions connected. Because their distorted appearance, cartograms have been criticized as difficult read. Some authors suggested th...

A rectangular cartogram is a type of map where every region is a rectangle. The size of the rectangles is chosen such that their areas represent a geographic variable (e.g., population). Good rectangular cartograms are hard to generate: The area specifications for each rectangle may make it impossible to realize correct adjacencies between the regions and so hamper the intuitive understanding o...

We present rectangular hierarchical cartograms for mapping socio-economic data. These density-normalising cartograms size spatial units by population, increasing the ease with which data for densely populated areas can be visually resolved compared to more conventional cartographic projections. Their hierarchical nature enables the study of spatial granularity in spatial hierarchies, hierarchic...

Cartograms are proportional drawings of maps where the areas of all countries correspond to prescribed weights. Besides the property of being a proportional representation it is essential for the quality of a cartogram that the countries are not too badly deformed. A good clarity can only be achieved if all countries can easily be identified by the reader due to the fact that their principal to...