# Heat map
The [heat map](https://api.highcharts.com/highcharts/plotOptions.heatmap) is the perfect chart to visualize [hot spots](https://smartvikisogn.github.io/HChartsCatalog/webpages/hotspots.html) within a large set of data, and to discover patterns or correlations. The heat map uses colors and a compact design to visualize data variations.
#### Tip
Be sure to set up [the data structure](https://api.highcharts.com/highmaps/series.heatmap.data) in the following order X, Y, value; where value represents the density of the color to display on the chart.