A Heat Map Chart arranges data points in a grid and colors each cell by category or range. Because heat maps support string-based ordinal color scales, they can represent qualitative categories as effectively as numeric values.
This sample recreates the Periodic Table of Elements as an interactive heat map. Nine element categories — from alkali metals to noble gases — are each assigned a distinct color through an ordinal color scale. Hover any element to see a rich tooltip showing its symbol, full name, atomic number, group, and period. A vertical legend on the right lists every category and lets you highlight all elements of a given type by hovering or clicking its legend item. Axes are hidden to preserve the classic periodic-table layout.
Follow the step-by-step Heat Map Tutorial to learn how such charts are built. See the Heat Map documentation for all configuration options.