BTA Charts
ChartsFlow & Relationship

Sankey Diagram

Visualize weighted flows between source and target nodes. Ideal for showing how quantities split and merge across stages — budgets, user journeys, energy flows, supply chains.

Examples

When to Use

  • Showing how a total quantity distributes across categories or stages
  • Budget allocation breakdowns
  • User flow through a funnel or process
  • Energy or resource flow analysis

Data Roles

Loading data roles...

Settings

Color & Appearance

Color Scheme

dropdown

Controls the color palette for nodes and links.

Default: vibrant

Node Settings

Node Width

number

Width of source/target node bars in pixels.

Default: 20

Node Padding

number

Vertical spacing between nodes in pixels.

Default: 12

Link Opacity

number

Opacity of flow links (5-100).

Default: 45

Color Mode

dropdown

How links are colored: gradient between source/target or fixed color.

Default: gradient

Data Labels

Show Labels

boolean

Display value labels on nodes and/or links.

Default: false

Common settings like Legend, Tooltip, and Axis configuration are covered in Shared Concepts.

Tips & Best Practices

  • Keep source/target names concise — long labels get truncated
  • Use the "vibrant" color scheme for presentations with many nodes
  • Sankey works best with 3–15 nodes per side; beyond that, consider filtering

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