Heat map to show scores Part of PowerCharts XT
A heat map chart is a specialized chart that uses colors to represent data values in a table. It is mostly used to plot large and complex data. The chart is visualized like a table with a finite number of rows and columns. Cells within the table are rendered in different colors depending upon the range in which the data value they represent belongs to. A heat map showing scores allow viewers to quickly gauge positive and negative ranges. A gradient scale legend is rendered at the bottom of the chart. This legend allows users to focus on a particular segment of positive or negative data values and commonly used for datasets like performance ratings, user sentiments and so on.
- Appropriate numerical ranges that enable a fairly even distribution of data between them.
- Use appropriate colors to highlight positive and negative ranges for the data set. Some colors stand out more than the others, giving unnecessary weight to that data. Instead, use a single color with varying shade or a spectrum between two analogous colors to show intensity.