Draggable Nodes

Drag a node up or down; links follow and the position survives updates. nodeMove reports the offset.

Chart type: Sankey sankey
Tier: Premium
Collection: Sankey
Render: Live, site theme

LIVE/sankey/draggable-nodes13 of 23 in Sankey

Open the chart without page chrome ↗Drawing width at least 900 px. Scroll within the chart on smaller screens.

Configuration

const options = {
  chart: {
    height: 420,
    toolbar: {
      show: false
    },
    type: "sankey",
    events: {
      nodeMove: (e, ctx, o) => log(`nodeMove ${o.node.name}: ${Math.round(o.offset)} px`)
    }
  },
  series: [
    {
      data: [
        ["Coal", "Electricity", 22],
        ["Gas", "Electricity", 30],
        ["Gas", "Heat", 26],
        ["Wind", "Electricity", 28],
        ["Solar", "Electricity", 14],
        ["Electricity", "Industry", 40],
        ["Electricity", "Homes", 34],
        ["Electricity", "Losses", 20],
        ["Heat", "Homes", 18],
        ["Heat", "Industry", 8]
      ]
    }
  ],
  plotOptions: {
    sankey: {
      draggable: true
    }
  },
  theme: {
    mode: "light",
    preset: "coastal"
  }
}

const chart = new WestCoastCharts(document.querySelector('#chart'), options)
chart.render()

01 · Speccomplete, runnable

import WestCoastCharts from 'west-coast-charts'
import types from 'west-coast-charts/types'
import premium from 'west-coast-charts/premium'

WestCoastCharts.use(types).use(premium)
const WestCoastChartsPremium = premium
WestCoastCharts.setLicenseKey(LICENCE_KEY) // paid production licence; localhost evaluation needs no key

const options = {
  chart: {
    height: 420,
    toolbar: {
      show: false
    },
    type: "sankey",
    events: {
      nodeMove: (e, ctx, o) => log(`nodeMove ${o.node.name}: ${Math.round(o.offset)} px`)
    }
  },
  series: [
    {
      data: [
        ["Coal", "Electricity", 22],
        ["Gas", "Electricity", 30],
        ["Gas", "Heat", 26],
        ["Wind", "Electricity", 28],
        ["Solar", "Electricity", 14],
        ["Electricity", "Industry", 40],
        ["Electricity", "Homes", 34],
        ["Electricity", "Losses", 20],
        ["Heat", "Homes", 18],
        ["Heat", "Industry", 8]
      ]
    }
  ],
  plotOptions: {
    sankey: {
      draggable: true
    }
  },
  theme: {
    mode: "light",
    preset: "coastal"
  }
}

const chart = new WestCoastCharts(document.querySelector('#chart'), options)
await chart.render()

02 · Rendered state

Waiting for the chart.

Open Data & agent view to read this chart through chart.describe().

Read from the running library through its optional agent/describe module. Text, table and JSON share the same snapshot. Demo data only.

03 · CLIPublic tools

$ wcc chart export sankey-draggable-nodes.json --out sankey-draggable-nodes.svg --with-table

Public agent tools 0.2.3, tested with Library 1.1.5; available from the versioned GitHub release and npm. Save a JSON spec first and check the loaded runtime and supported modules before rendering. Command reference

04 · Markdown/gallery/sankey/draggable-nodes/index.md

Loading /gallery/sankey/draggable-nodes/index.md …

This example uses Premium modules. Compare licences · Embedding in a distributed product?