Sankey Chart

Sankey Chart – Visualize Flow with Purpose

The Sankey Chart in Lowcoder is the go-to component for visualizing how resources, values, or data move from one stage to another. With its signature flowing links and proportional widths, the Sankey chart shows where things come from, where they go, and how much is lost or retained along the way.

Perfect For:

• Energy flow diagrams

• User journey mapping (e.g. from landing page → signup → purchase)

• Budget allocation & expenditure tracking

• Process pipelines (e.g. manufacturing or logistics)

Data Format Example

Sankey Charts are based on nodes and links between them:

{
  "nodes": [
    { "name": "Budget" },
    { "name": "Marketing" },
    { "name": "Operations" },
    { "name": "Profit" }
  ],
  "links": [
    { "source": "Budget", "target": "Marketing", "value": 30000 },
    { "source": "Budget", "target": "Operations", "value": 50000 },
    { "source": "Operations", "target": "Profit", "value": 15000 }
  ]
}

Each link’s width is proportional to its value — a visual cue for weight or volume.

Configuration Essentials

• Chart Type: Drag “Sankey Chart” from the Component section onto Editor's View

• Nodes: Automatically derived from link data or can be explicitly defined

• Flow Direction: Usually left-to-right, but can be styled vertically or circularly

• Tooltip Support: Hover to see exact values for any connection

Styling Options

• Customize node color, label position, and link curvature

• Adjust link gradients or segment spacing for better visual clarity

• Use the ECharts JSON editor for deeper enhancements (e.g., link emphasis, dynamic highlights)

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