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Twentyfirst UIHalo

Heatmap

Charts · Heatmap

Grid of cells shaded by value, for patterns across two dimensions (weekday × hour, week × day).

Props: rows, cols (labels), values (rows × cols numbers), colEvery (label every nth column), caption, format(v), label.

  • Five steps of one hue (mint-ink mixed into the surface), so it reads by lightness in both themes and for color-blind viewers.
  • The footer shows the hovered cell's exact value; keep the Less–More scale visible.

When people sign up

By weekday and hour

Hover a cell for the countLessMore

Props

Heatmap

PropTypeNotes
rowsstring[]Required
colsstring[]Required
valuesnumber[][]Required
colEvery?number
caption?string
format?(v: number) => string
label?string
className?stringExtra class on the root element.
style?CSSPropertiesInline style on the root element.