map

In my first post of 2024, which unfortunately has not been possible before April, I will explain how we can group in the same location several proportional circles. In 2022 I was looking for how to represent the number of heat wave days according to the degree of severity in Spain. I found the solution using the circle packing which is also used in the Dorling cartogram.

A disadvantage of choropleth maps is that they tend to distort the relationship between the true underlying geography and the represented variable. It is because the administrative divisions do not usually coincide with the geographical reality where people live. Besides, large areas appear to have a weight that they do not really have because of sparsely populated regions. To better reflect reality, more realistic population distributions are used, such as land use. With Geographic Information Systems techniques, it is possible to redistribute the variable of interest as a function of a variable with a smaller spatial unit.