Pie chart in angular 12 using ng2-charts example; In this tutorial, i am going to show you how to install ng2-charts and create pie char in angular 12 app.
Pie charts can be used to show percentages of a whole, and represents percentages at a set point in time. Unlike bar graphs and line graphs, pie charts do not show changes over time. The following pages describe the different parts of a pie chart.
Angular /12 Pie Chart Using Ng2-Chart JS
- Step 1 – Create New Angular App
- Step 2 – Install Ng2-Charts JS Library
- Step 3 – Import Modules on App.Module.ts File
- Step 4 – Add Code on View File
- Step 5 – Add Code On pie-chart.Component ts File
- Step 6 – Start the Angular Pie Chart App
Step 1 – Create New Angular App
Execute the following command on terminal to install angular app:
ng new my-new-app
Step 2 – Install Ng2-Charts JS Library
Then install NPM package called ng2-charts chart.js –save for implement Pie chart in angular 11 app. So, You can install the packages by executing the following commands on the terminal:
npm install --save bootstrap npm install ng2-charts chart.js --save
After that, open angular.json file and update the following code into it:
"styles": [ "node_modules/bootstrap/dist/css/bootstrap.min.css", "src/styles.css" ]
Step 3 – Import Modules on App.Module.ts File
Go to src/directory and open app.module.ts file. And then add the following lines of into app.module.ts file:
import { ChartsModule } from 'ng2-charts'; @NgModule({ declarations: [...], imports: [ ChartsModule ], providers: [...], bootstrap: [...] }) export class AppModule { }
Step 4 – Add Code on View File
Create pie chart in angular app. So, visit src/app/ and pie-chart.component.htmland update the following code into it:
<div class="chart-wrapper"> <canvas baseChart [data]="pieChartData" [labels]="pieChartLabels" [chartType]="pieChartType" [options]="pieChartOptions" [plugins]="pieChartPlugins" [legend]="pieChartLegend"> </canvas> </div>
Step 5 – Add Code On pie-chart.Component ts File
Go to src/ directory and open pie-chart.component.ts. Then add the following code into component.ts file:
import { Component } from '@angular/core'; import { ChartType, ChartOptions } from 'chart.js'; import { SingleDataSet, Label, monkeyPatchChartJsLegend, monkeyPatchChartJsTooltip } from 'ng2-charts'; @Component({ selector: 'app-pie-chart', templateUrl: './pie-chart.component.html', styleUrls: ['./pie-chart.component.css'] }) export class PieChartComponent { public pieChartOptions: ChartOptions = { responsive: true, }; public pieChartLabels: Label[] = [['SciFi'], ['Drama'], 'Comedy']; public pieChartData: SingleDataSet = [30, 50, 20]; public pieChartType: ChartType = 'pie'; public pieChartLegend = true; public pieChartPlugins = []; constructor() { monkeyPatchChartJsTooltip(); monkeyPatchChartJsLegend(); } }
Step 6 – Start the Angular Pie Chart App
Execute the following command on terminal to start angular pie chart app:
ng serve