Abstract
Evaluating rainbow colour scheme in social data mapping
Highlights
This colour scheme is commonly considered to be a very poor way of representing data due to several problems
There are established guidelines regarding colour use in cartography, for example, in textbooks. It is a well-established rule that when presenting quantitative data, the various values of the mapped data should be mainly represented by varying the colour value
A growing frequency in colour use that contradicts the rules of cartographic visualization has been observed
Summary
This colour scheme is commonly considered to be a very poor way of representing data due to several problems. The case is true of the rainbow colour schemes (Figure 1.), which are commonly applied in geovisualisation practices in thematic maps; in the past, mainly on isoline maps; and currently, on choropleth maps.
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