Stacked area

Show how the parts of a total evolve together over time, stacked into one moving picture.

8 stacked area examples

Revenue by channel

Three channels stacking into total revenue.

The top edge is total revenue; each band is how much of it a channel contributed. Direct overtaking paid is a shift you would miss on three separate charts.

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Traffic by device

Desktop, mobile and tablet stacked over a year.

Mobile crossing desktop is the single most consequential line in a decade of web analytics, and this is the chart that shows it happening.

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Hours by project

Where a team's hours went each month.

Capacity is the top edge and allocation is the bands. When maintenance swells, the roadmap band shrinks — visibly, and in the same picture.

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Revenue by plan

Free, Plus and Pro revenue over time.

Stacked areas answer 'is the mix improving?' — a growing Pro band under a flat total is a very different quarter from the reverse.

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Emissions by scope

Scope 1, 2 and 3 emissions per quarter.

Sustainability reporting is stacked by regulation. The total has to come down, and the chart shows which scope is doing the work.

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Budget by department

Departmental spend accumulating through the year.

Every band is a department's burn and the top edge is the company's. Overspend shows up as a band that gets thicker than it should.

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Users by region

Regional user base stacked over a year.

Expansion looks like a new band appearing at the bottom and slowly thickening. Nothing else visualises market entry this cleanly.

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Storage by content type

Images, video and documents over time.

The band growing fastest is the one that will define next year's storage bill. Here it is video, by a distance.

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