A Heat Matrix is a special type of Heatmap data visualization. It is an excellent choice if your data items can be categorized into multiple groupings (for example, By Region and By Product), and you want to understand the correlation between these groupings.

A Heat Matrix is similar to a Heatmap or a Treemap in that it displays many different data items and it can represent the value for each item using colors. However, unlike Heatmap or a Treemap, the Heat Matrix has a defined structure where two data attributes define each data item, thus producing a matrix. Within the Heat Matrix, each column and row represents a unique attribute, and the point where two items intersect represents a unique combination of the two attributes.