Heatmap
Colour-coded grids that make patterns in large tables visible.
The idea
A heatmap turns every cell of a table into a colour, so hot spots and gaps stand out without reading a single number. Rows and columns can be categories, hours, days or cohorts. Use a sequential scale and keep the same order across every row.
Where to use it
- Activity by hour and weekday
- Customer retention by sign-up cohort
- Daily values across a whole year
- Stripes that show a trend through colour
Templates
Start from any of these templates and swap in your own data.
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