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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 ]
]

Each nested array contains widget 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 options. In this demo, we specify the fileName and format. Refer to the method description for information on other available fields.

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<div class="charts"> <dx-chart id="chart" [dataSource]="goldMedals" title="Olympic Gold Medals in 2008" [rotated]="true"> <dxi-series color="#f3c40b" type="bar" argumentField="country" valueField="medals"> <dxo-label [visible]="true"></dxo-label> </dxi-series> <dxo-legend [visible]="false"></dxo-legend> </dx-chart> <dx-pie-chart id="pieChart" [dataSource]="allMedals" [title]="title" palette="Harmony Light"> <dxi-series argumentField="country" valueField="medals"> <dxo-label [visible]="true"> <dxo-connector [visible]="true"></dxo-connector> </dxo-label> </dxi-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 { NgModule, Component, ViewChild, enableProdMode } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxChartModule, DxPieChartModule, DxChartComponent, DxPieChartComponent, DxButtonModule } from 'devextreme-angular'; import { Service, Medals } from './app.service'; import { exportWidgets } from 'devextreme/viz/export'; if(!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', providers: [Service], templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'] }) export class AppComponent { @ViewChild(DxChartComponent, { static: false }) chart: DxChartComponent; @ViewChild(DxPieChartComponent, { static: false }) pieChart: DxPieChartComponent; title: string = "Total Olympic Medals\n in 2008"; allMedals: Medals[]; goldMedals: Medals[]; constructor(service: Service) { this.allMedals = service.getAllMedals(); this.goldMedals = service.getGoldMedals(); } export() { var chartInstance = this.chart.instance, pieChartInstance = this.pieChart.instance; exportWidgets([[chartInstance, pieChartInstance]], { fileName: "chart", format: 'PNG' }); } } @NgModule({ imports: [ BrowserModule, DxChartModule, DxPieChartModule, DxButtonModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
::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; } let 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 }]; let 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; } }
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular and DevExtreme here: // https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/ System.config({ transpiler: 'ts', typescriptOptions: { module: "commonjs", emitDecoratorMetadata: true, experimentalDecorators: true }, meta: { 'typescript': { "exports": "ts" } }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js', 'typescript': 'npm:typescript@3.4.5/lib/typescript.js', '@angular/core': 'npm:@angular/core@8.0.0/bundles/core.umd.js', '@angular/common': 'npm:@angular/common@8.0.0/bundles/common.umd.js', '@angular/compiler': 'npm:@angular/compiler@8.0.0/bundles/compiler.umd.js', '@angular/platform-browser': 'npm:@angular/platform-browser@8.0.0/bundles/platform-browser.umd.js', '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@8.0.0/bundles/platform-browser-dynamic.umd.js', '@angular/router': 'npm:@angular/router@8.0.0/bundles/router.umd.js', '@angular/forms': 'npm:@angular/forms@8.0.0/bundles/forms.umd.js', '@angular/common/http': 'npm:@angular/common@8.0.0/bundles/common-http.umd.js', 'tslib': 'npm:tslib/tslib.js', 'rxjs': 'npm:rxjs@6.3.3', 'rxjs/operators': 'npm:rxjs@6.3.3/operators', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram', 'devexpress-gantt': 'npm:devexpress-gantt', 'devextreme': 'npm:devextreme@19.2', 'devextreme-angular': 'npm:devextreme-angular@19.2' }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts' }, 'devextreme': { defaultExtension: 'js' }, 'rxjs': { main: 'index.js', defaultExtension: 'js' }, 'rxjs/operators': { main: 'index.js', defaultExtension: 'js' }, 'devextreme-angular': { main: 'index.js', defaultExtension: 'js' } } });
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <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=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.3/css/dx.light.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/zone.js@0.6.25/dist/zone.js"></script> <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script src="config.js"></script> <script> System.import('app').catch(console.error.bind(console)); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <demo-app>Loading...</demo-app> </div> </body> </html>