← All chart types
correlation family
matrix-categorical-coded
Grid where each cell carries a category label, colour-coded by group.
Cells contain text (drug names, country labels, project codes) and are coloured by group / quartile / status. Reads as a 2D classification table.
When to use
Treatment matrices, project portfolios, prioritisation grids where each cell is a named entity assigned to a category.
When NOT to use
Cells are numeric values (use heatmap).
Rhetorical roles
- prioritize
- decompose
Variants & related
Required primitives
- has_legend
- has_axis_titles
Optional primitives
- has_source_note
Common anti-patterns
- unfamiliar-encoding
Disambiguation rules
- Cells contain TEXT, not just colour.
- If column widths are proportional, it is marimekko.
- Equal cells with text + colour = matrix-categorical-coded.