Heatmap gradient color

Quick answer：

A heatmap gradient color refers to a visual representation technique used in data visualization. It involves using a gradient of colors to show variations in intensity, where different shades of a color spectrum are assigned to represent varying levels of data. This method helps viewers quickly interpret the relative magnitude of data points across a two-dimensional grid or map. Heatmaps with gradient colors are commonly used in various fields such as weather analysis, finance, and scientific research.