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chartjs-chart-graph-dagre

v3.1.0

Published

Chart.js graph chart extension using the dagre layout

Downloads

18

Readme

Chart.js Graphs Dagre Layout

NPM Package Github Actions

Adds another graph controller dagre to chart.js based on chartjs-chart-graph which uses the Dagre library for performing the graph layout.

Related Plugins

Check out also my other chart.js plugins:

Install

npm install --save chart.js chartjs-chart-graph chartjs-chart-graph-dagre

Usage

see Samples on Github

Options

The options are wrapper for specifying dagre graph, node, and edge options. see https://github.com/dagrejs/dagre/wiki#configuring-the-layout.

interface IDagreOptions {
  dagre: {
    /**
     * dagre graph options
     */
    graph: {};
    /**
     * dagre node options or a function generating the option per node
     */
    node: ((i: number) => {}) | {};
    /**
     * dagre edge options or a function generating the option per edge
     */
    edge: ((source: number, target: number) => {}) | {};
  };
}

ESM and Tree Shaking

The ESM build of the library supports tree shaking thus having no side effects. As a consequence the chart.js library won't be automatically manipulated nor new controllers automatically registered. One has to manually import and register them.

Variant A:

import Chart from 'chart.js';
import { EdgeLine } from 'chartjs-chart-graph';
import { DagreGraphController } from 'chartjs-chart-graph-dagre';

// register controller in chart.js and ensure the defaults are set
Chart.register(DagreGraphController, EdgeLine);
...

new Chart(ctx, {
  type: DagreGraphController.id,
  data: [...],
});

Variant B:

import { DagreGraphChart } from 'chartjs-chart-graph-dagre';

new DagreGraphChart(ctx, {
  data: [...],
});

Development Environment

npm i -g yarn
yarn set version 2
yarn install
yarn pnpify --sdk vscode

Building

yarn install
yarn build