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Angular Charts - Export Several Charts

The DevExpress.viz.exportWidgets(widgetInstances, options) method allows you to export several charts to a single image or document.

The widgetInstances parameter accepts an array with the following format:

[
    [ widgetInstance0_1, widgetInstance0_2, ..., widgetInstance0_N ],
    [ widgetInstance1_1, widgetInstance1_2, ..., widgetInstance1_M ],
    ...
    [ widgetInstanceP_1, widgetInstanceP_2, ..., widgetInstanceP_R ]
]
Backend API
<div class="charts"> <dx-chart id="chart" [dataSource]="goldMedals" title="Olympic Gold Medals in 2008" [rotated]="true" > <dxi-chart-series color="#f3c40b" type="bar" argumentField="country" valueField="medals" > <dxo-chart-label [visible]="true"></dxo-chart-label> </dxi-chart-series> <dxo-chart-legend [visible]="false"></dxo-chart-legend> </dx-chart> <dx-pie-chart id="pieChart" [dataSource]="allMedals" [title]="title" palette="Harmony Light" > <dxi-pie-chart-series argumentField="country" valueField="medals"> <dxo-pie-chart-label [visible]="true"> <dxo-pie-chart-connector [visible]="true"></dxo-pie-chart-connector> </dxo-pie-chart-label> </dxi-pie-chart-series> </dx-pie-chart> </div> <div class="controls-pane"> <dx-button icon="export" text="Export" type="default" [width]="145" (onClick)="export()" > </dx-button> </div>
import { bootstrapApplication } from '@angular/platform-browser'; import { Component, ViewChild, enableProdMode, provideZoneChangeDetection } from '@angular/core'; import { DxChartModule, DxPieChartModule, DxChartComponent, DxPieChartComponent, DxButtonModule, } from 'devextreme-angular'; import { exportWidgets } from 'devextreme/viz/export'; import { Service, Medals } from './app.service'; if (!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', providers: [Service], templateUrl: './app.component.html', styleUrls: ['./app.component.css'], imports: [ DxChartModule, DxPieChartModule, DxButtonModule, ], }) export class AppComponent { @ViewChild(DxChartComponent, { static: false }) chart: DxChartComponent; @ViewChild(DxPieChartComponent, { static: false }) pieChart: DxPieChartComponent; title = 'Total Olympic Medals\n in 2008'; allMedals: Medals[]; goldMedals: Medals[]; constructor(service: Service) { this.allMedals = service.getAllMedals(); this.goldMedals = service.getGoldMedals(); } export() { const chartInstance = this.chart.instance; const pieChartInstance = this.pieChart.instance; exportWidgets([[chartInstance, pieChartInstance]], { fileName: 'chart', format: 'PNG', }); } } bootstrapApplication(AppComponent, { providers: [ provideZoneChangeDetection({ eventCoalescing: true, runCoalescing: true }), ], });
::ng-deep #chart-demo { height: 460px; } ::ng-deep .charts { width: 820px; margin: 0 auto; height: 374px; margin-bottom: 40px; font-size: 0; } ::ng-deep #chart, #pieChart { width: 395px; height: 100%; display: inline-block; vertical-align: top; } ::ng-deep #chart { margin-right: 30px; } ::ng-deep .controls-pane { text-align: center; }
import { Injectable } from '@angular/core'; export class Medals { country: string; medals: number; } const allMedals: Medals[] = [{ country: 'USA', medals: 110, }, { country: 'China', medals: 100, }, { country: 'Russia', medals: 71, }, { country: 'UK', medals: 47, }, { country: 'Australia', medals: 46, }, { country: 'Germany', medals: 41, }, { country: 'France', medals: 41, }, { country: 'South Korea', medals: 31, }]; const goldMedals: Medals[] = [{ country: 'China', medals: 51, }, { country: 'USA', medals: 36, }, { country: 'Russia', medals: 22, }, { country: 'UK', medals: 19, }, { country: 'Germany', medals: 16, }, { country: 'Australia', medals: 14, }, { country: 'South Korea', medals: 13, }, { country: 'France', medals: 7, }]; @Injectable() export class Service { getAllMedals(): Medals[] { return allMedals; } getGoldMedals(): Medals[] { return goldMedals; } }
<!DOCTYPE html> <html lang="en"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/26.1.5/css/dx.light.css" /> </head> <body class="dx-viewport"> <div class="demo-container"> <demo-app>Loading...</demo-app> </div> <script src="https://cdn.jsdelivr.net/npm/zone.js@0.16.2/bundles/zone.umd.js"></script> <script src="./bundle.js" type="module"></script> </body> </html>

Each nested array contains component instances that should be in the same row in the exported document. In this demo, chartInstance and pieChartInstance occupy the only row in the document.

The options parameter accepts an object whose fields allow you to configure export properties. In this demo, we specify the fileName and format. Refer to the method description for information on other available fields.