Sankey

Sankey diagrams work best with a data set that shows a before and after state, or relationships/transitions between two or more categories. To learn more about what types of insights work best with a Sankey, see Tableau Blog: Exploring Sankey and Radial Charts.

To build a viz with this extension, assign two to five categorical dimensions to the Level encoding box and assign one or more measures to the Link encoding box.

This Viz Extension is created and hosted by Tableau and makes use of Tableau interactivity behaviors.

December 2025 - v2.0.0

New Features

• Advanced color mapping: Map colors for each level node, with options to assign custom color palettes per level or globally across all levels.
• Expanded node labels: Level nodes can now display the link value or percentage of total as labels.
• Improved user experience:
  • Added a default instructional splash screen and an embedded help link.
  • Improved tooltips on marks card encodings for better guidance.

Bug Fixes

• "Ignore nulls" fix: The "Ignore Nulls" option now correctly removes null links and nodes.
• Color persistence: Improved color stability when filtering or swapping data.
• Alias display: Ability to display aliases on labels.

Developer Release Update Notes.