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LogoutTableau heat map shows data values as density spots or heat spots on a map.
A heat map is also known as density heat map as it shows colored spots whose intensity and shade vary based on the number of values in a cluster of values.
More the number of values in a cluster, more dense it is and shown with a dark color on the map.
Therefore, we can use density heat maps or heat maps to analyse areas with densely or sparsely populated data.