调整ng2图表的宽度和高度

Question

如何使用ng2-charts设置图表的宽度和高度？我正在制作条形图,就像ng2-charts网站上的演示一样.

public doughnutChartLabels:string[] = ['EMI', 'Car', 'Food', 'Fuel'];
data:number[] = [3350, 5450, 4100, 1000];
  public doughnutChartType:string = 'doughnut';
  options: { responsive: true, }
  colorsEmptyObject: Array<Color> = [{}];
  public datasets: any[] = [
  {
    data: this.data,
    backgroundColor: [
      "#FF6384",
      "#36A2EB",
      "#FFCE56"
    ],
    hoverBackgroundColor: [
      "#FF6384",
      "#36A2EB",
      "#FFCE56"
    ]
  }];
  // events
  public chartClicked(e:any):void {
    console.log(e);
  }

  public chartHovered(e:any):void {
    console.log(e);
  }

Answer 1

对于矩形图形(线条,条形),您可以在html中包含一个width和height标记:

<canvas baseChart width="2" height="1"
        [datasets]="chartData"
        [labels]="chartLabels"
        [options]="chartOptions"
        [colors]="chartColors"
        [legend]=true
        chartType=line></canvas>

宽度和高度设置纵横比,而不是实际尺寸.

你可以为方形图形(甜甜圈,雷达,馅饼,极地)做到这一点,但它没有多大意义.它将保持方形,但在侧面或顶部和底部有较大的衬垫.

相反,您可以在div包含图表时设置所需的确切大小:

<div style="display: block; width: 200px; height: 200px;">
    <canvas baseChart
            [data]="doughnutChartData"
            [labels]="doughnutChartLabels"
            [chartType]="doughnutChartType"
            (chartHover)="chartHovered($event)"
            (chartClick)="chartClicked($event)"></canvas>
</div>