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Quick answers
When should I pick Sankey flow stories?
When the story is: budget allocation, conversion paths, material or energy flows.
When should I avoid Sankey flow stories?
Skip it in cases like: the audience only needs a start-vs-end waterfall.
Who invented or popularised it?
Matthew Henry Phineas Riall Sankey (1898); modern d3-sankey layouts
What does it encode?
link width proportional to flow between nodes
Is it OK in ads?
Yes if one claim is visible at a glance in Meta, Google and retail print; otherwise link to a full figure.
Will a teacher accept it?
Yes for lab reports and poster boards if axes, units and a source line are present.
Sankey flow stories encodes values as link width proportional to flow between nodes. Matthew Henry Phineas Riall Sankey (1898); modern d3-sankey layouts.
In reports, ads and assignments it fits budget allocation, conversion paths, material or energy flows. Skip it when the audience only needs a start-vs-end waterfall.
Use when
- Use when 1 — Use Sankey flow stories when the story is budget allocation, conversion paths, material or energy flows.
- Use when 2 — Build the first draft in Excel or Google Sheets, then restyle — do not screenshot.
- Use when 3 — In PowerPoint, one Sankey flow stories per slide, claim in the title.
- Use when 4 — For lab reports and poster boards, this form works when the question is comparison or process.
- Use when 5 — In Meta, Google and retail print, keep one number visible at thumbnail size.
Avoid when
- Avoid when 1 — Skip Sankey flow stories in cases like: the audience only needs a start-vs-end waterfall.
- Avoid when 2 — 3-D, dual axes, rainbow scales
- Avoid when 3 — Undated numbers, undated time series
- Avoid when 4 — Four charts on one slide
Audiences
- Work — PowerPoint
- Ads — Meta, Google and retail print
- School — lab reports and poster boards
Sankey flow stories: honour link width proportional to flow between nodes, and switch when the audience only needs a start-vs-end waterfall.