Heat-Maps in R

How do we make heat-maps in R?

Anthony B. Masters
Oct 3, 2020 · 3 min read

Heat-maps show individual values as colours in two dimensions. Whilst the term is modern, the idea of colouring cells to show values has done for over a century.

This article looks at how to create a heat-map in R.

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A cluster heat-map has tiles: the positions refer to two different categories. In that structure, analysts display the value through colour. One way to show lab-confirmed cases of the SARS-CoV-2 virus is through a heat-map.