Heat Map Chart looks like a table which cells are colored in accordance to the range of values they belong to. Usually, the higher the value (significance) is, the brighter the color of the cell. These charts are being predominantly used in biology, web-analytics and other analytics, geography or anywhere else where it’s necessary to show the hierarchy of values in some categories.
This Chart demonstrates the risk matrix of server heating because of an error. The higher the likelyhood is and the worse are the consequences, the higher is residual risk; the gradation of the risk is represented by colors of the Heat Map. The cell representing the maximum (extreme) possibility of server breaking is colored in bright orange and the cell representing the lowest possibility of this is colored in light blue. There are two axes; the vertical one holds the danger rates of an error consequence (getting higher to the bottom) and the horizontal one holds the rates of this error likelyhood. There are tooltips enabled in the Chart, so hover a point to see all its params (residual risk, danger rate of a consequence and the rate of the error likelyhood).