ng2-charts

Question

我正在尝试将 ng2-charts 与 Angular 4.0 一起使用，我想通过使用 chart.js:

获得与这里相同的东西

    ...
    <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.6.0/Chart.bundle.min.js"></script>
    ...

    <canvas id="myChart" width="400" height="400"></canvas>
    <script>
        var ctx = document.getElementById("myChart").getContext('2d');
        var chart = new Chart(ctx, {
            // The type of chart we want to create
            type: 'horizontalBar',

            // The data for our dataset
            data: {
                labels: ["example1","example2","example3","example4","example5","example6","example7"],
                datasets: [{
                    label: "My First dataset",
                    backgroundColor: 'rgb(255, 99, 132)',
                    borderColor: 'rgb(255, 99, 132)',
                    data: [0, 10, 5, 2, 20, 30, 45]
                },{
                    label: "My second dataset",
                    backgroundColor: 'rgb(2, 99, 132)',
                    borderColor: 'rgb(255, 99, 132)',
                    data: [3, 10, 5, 2, 20, 30, 45]
                }]
            },

            // Configuration options go here
            options: {
                scales: {
                    xAxes: [{
                        stacked: true
                    }],
                    yAxes: [{
                        stacked: true
                    }]
                }
            }
        });
    </script>

我所做的是

npm install ng2-charts --save
npm install chart.js --save

我已经添加了

<script src="node_modules/chart.js/src/chart.js"></script>

到src/index.html

和

import { ChartsModule } from 'ng2-charts';

imports: [
   ChartsModule
]

到src/app/app.module.ts

你能给我一个 src/index.html、src/app/app.component.html 和 app/component.ts 的工作示例吗？因为我在示例中遇到了一些问题

GET 
http://localhost:4200/node_modules/chart.js/src/chart.js [HTTP/1.1 404 Not Found 8 ms]
ERROR Error: "undefined" is not a chart type.

即使我更改 chart.js 位置。

src/index.html

<!doctype html>
<html>
<head>
  <meta charset="utf-8">
  <title>Chart</title>
  <base href="/">

  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" type="image/x-icon" href="favicon.ico">

  <script src="../node_modules/chart.js/src/chart.js"></script>

</head>

<body>
  <app-root>Loading...</app-root>
</body>
</html>

src/app/app.component.html

<h1>
  {{title}}
</h1>

    <div style="display: block">
      <canvas baseChart
              [data]="chartData"
              (chartHover)="chartHovered($event)"
              (chartClick)="chartClicked($event)"></canvas>
    </div>
    <button (click)="randomize()">Update</button>

src/app/app.component.ts

import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  title = 'app works!';

  public chartData: Array<any> = [
    [65, 59, 80, 81, 56, 55, 40],
    [28, 48, 40, 19, 86, 27, 90]
  ];

}

Answer 1

改变你的chart.js 到

<script src="node_modules/chart.js/dist/Chart.bundle.min.js"></script>

app模块ts代码

import { ChartsModule } from 'ng2-charts/ng2-charts';

// In your App's module:
imports: [
   ChartsModule
]

更新删除 index.html 中的脚本标签并添加

检查您的 angular-cli.json 和 scripts 数组，然后在其中添加：

"../node_modules/chart.js/dist/Chart.bundle.min.js"

Answer 2

除了将 chart.js 文件添加到 .angular-cli.json 之外，您只缺少作为输入传递给 baseChart 的 chartType。

<canvas baseChart
        [chartType]="'horizontalBar'"
        [data]="chartData"
        (chartHover)="chartHovered($event)"
        (chartClick)="chartClicked($event)"></canvas>

Answer 3

从 'ng2-charts/ng2-charts' 导入 { ChartsModule}；

// 在您应用的模块中：进口：[ 图表模块 ]

ng2-charts - Angular 4 个工作示例

ng2-charts - Angular 4 working example

charts

chart.js

angular