How to make Chart.js Bubble chart with ng2-chart?

问题

Chart.js supports bubble charts, but the ng2-chart docs don't mention them. Is it possible to build a bubble chart with ng2-charts? Any pointer to a working example would be great.

note: cross-posted on github

回答1:

I've had a look at the source code. As of version 1.1.0 (May 17 2016), bubble charts do not appear to be supported.

回答2:

The npm package ng2-charts now supports bubble charts (as of version 2.0.0-beta.10)

Here's the snippet from the demo app:

<div style="display: block">
  <canvas baseChart [datasets]="bubbleChartData" [options]="bubbleChartOptions" [colors]="bubbleChartColors"
    [legend]="bubbleChartLegend" [chartType]="bubbleChartType"></canvas>
</div>

Code:

import { Component, OnInit } from '@angular/core';
import { ChartOptions, ChartType, ChartDataSets } from 'chart.js';
import { Color } from 'ng2-charts';

@Component({
  selector: 'app-bubble-chart',
  templateUrl: './bubble-chart.component.html',
  styleUrls: ['./bubble-chart.component.scss']
})
export class BubbleChartComponent implements OnInit {
  public bubbleChartOptions: ChartOptions = {
    responsive: true,
    scales: {
      xAxes: [{ ticks: { min: 0, max: 30, } }],
      yAxes: [{ ticks: { min: 0, max: 30, } }]
    }
  };
  public bubbleChartType: ChartType = 'bubble';
  public bubbleChartLegend = true;

  public bubbleChartData: ChartDataSets[] = [
    {
      data: [
        { x: 10, y: 10, r: 10 },
        { x: 15, y: 5, r: 15 },
        { x: 26, y: 12, r: 23 },
        { x: 7, y: 8, r: 8 },
      ],
      label: 'Series A',
    },
  ];

  public bubbleChartColors: Color[] = [
    {
      backgroundColor: [
        'red',
        'green',
        'blue',
        'purple',
      ]
    }
  ];

  constructor() { }

  ngOnInit() {
  }
}

(I am a collaborator on that package).

来源：https://stackoverflow.com/questions/37843632/how-to-make-chart-js-bubble-chart-with-ng2-chart

标签

angular

chart.js

ng2-charts