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Angular Vector Map - Dynamic Viewport

This demo illustrates how to change the map's viewport. Use the drop-down menu under the map to choose a continent and change the visible area so that the chosen continent is displayed optimally.

To implement this functionality, call the viewport(viewportCoordinates) method every time the drop-down box value changes. You can also implement the onCenterChanged and onZoomFactorChanged functions to display the map center's coordinates and the current zoom factor in text boxes under the map.

Backend API
<dx-vector-map id="vector-map" #vectorMap [bounds]="[-180, 85, 180, -60]" (onZoomFactorChanged)="zoomChanged($event)" (onCenterChanged)="centerChanged($event)" > <dxi-vector-map-layer [dataSource]="worldMap"></dxi-vector-map-layer> <dxo-vector-map-control-bar [panVisible]="pan.value" [zoomVisible]="zoom.value" > </dxo-vector-map-control-bar> </dx-vector-map> <div class="options"> <div class="caption">Options</div> <div class="wrapper-option"> <div class="column"> <div class="option"> <span>Continent</span> <dx-select-box [dataSource]="viewportData" [width]="210" [inputAttr]="{ 'aria-label': 'Continent' }" displayExpr="continent" valueExpr="coordinates" [value]="viewportData[0].coordinates" (onValueChanged)="onValueChanged($event)" ></dx-select-box> </div> <div class="option"> <span>Zoom factor</span> <dx-text-box [value]="zoomFactorValue" [readOnly]="true" [width]="210" [inputAttr]="{ 'aria-label': 'Zoom' }" > </dx-text-box> </div> <div class="option"> <span>Center</span> <dx-text-box [inputAttr]="{ 'aria-label': 'Center' }" [value]="centerValue" [readOnly]="true" [width]="210" ></dx-text-box> </div> </div> <div class="column"> <div class="option"> <span>Pan control</span> <dx-switch [value]="true" #pan></dx-switch> </div> <div class="option"> <span>Zoom bar</span> <dx-switch [value]="true" #zoom></dx-switch> </div> </div> </div> </div>
import { bootstrapApplication } from '@angular/platform-browser'; import { Component, enableProdMode, ViewChild, provideZoneChangeDetection } from '@angular/core'; import { DxTextBoxModule, DxSwitchModule } from 'devextreme-angular'; import * as mapsData from 'devextreme-dist/js/vectormap-data/world.js'; import { DxSelectBoxModule, DxSelectBoxTypes } from 'devextreme-angular/ui/select-box'; import { DxVectorMapModule, DxVectorMapComponent, DxVectorMapTypes } from 'devextreme-angular/ui/vector-map'; import { ViewportCoordinate, Service } from './app.service'; if (!/localhost/.test(document.location.host)) { enableProdMode(); } let modulePrefix = ''; // @ts-ignore if (window && window.config?.packageConfigPaths) { modulePrefix = '/app'; } @Component({ selector: 'demo-app', providers: [Service], templateUrl: `app/app.component.html`, styleUrls: [`app/app.component.css`], preserveWhitespaces: true, imports: [ DxVectorMapModule, DxSelectBoxModule, DxSwitchModule, DxTextBoxModule, ], }) export class AppComponent { worldMap = mapsData.world; zoomFactorValue = '1.00'; centerValue = '0.000, 46.036'; viewportData: ViewportCoordinate[]; @ViewChild(DxVectorMapComponent, { static: false }) map: DxVectorMapComponent; constructor(service: Service) { this.viewportData = service.getCoordinates(); } onValueChanged(e: DxSelectBoxTypes.ValueChangedEvent) { this.map.instance.viewport(e.value); } zoomChanged(e: DxVectorMapTypes.ZoomFactorChangedEvent) { this.zoomFactorValue = e.zoomFactor.toFixed(2); } centerChanged(e: DxVectorMapTypes.CenterChangedEvent) { this.centerValue = `${e.center[0].toFixed(3) }, ${e.center[1].toFixed(3)}`; } } bootstrapApplication(AppComponent, { providers: [ provideZoneChangeDetection({ eventCoalescing: true, runCoalescing: true }), ], });
::ng-deep #vector-map { height: 420px; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); margin-top: 20px; } ::ng-deep .wrapper-option { display: flex; gap: 24px; padding-top: 16px; } ::ng-deep .column { display: flex; gap: 10px; flex-direction: column; } .option { display: flex; align-items: center; min-height: 34px; } .caption { font-size: 18px; font-weight: 500; } .option > span { width: 140px; }
import { Injectable } from '@angular/core'; export class ViewportCoordinate { continent: string; coordinates: number[] | 'null'; } const viewportCoordinates: ViewportCoordinate[] = [{ continent: 'all', coordinates: 'null', }, { continent: 'NorthAmerica', coordinates: [-180, 84.52, -22.11, -1.57], }, { continent: 'SouthAmerica', coordinates: [-112.47, 14.26, -27.52, -57.44], }, { continent: 'Africa', coordinates: [-29.34, 39.09, 55.60, -39.00], }, { continent: 'Europe', coordinates: [-2.35, 70.91, 61.35, 35.84], }, { continent: 'Asia', coordinates: [27.62, 83.11, 180, -19.36], }, { continent: 'Australia', coordinates: [104.87, -6.61, 149.98, -45.87], }]; @Injectable() export class Service { getCoordinates(): ViewportCoordinate[] { return viewportCoordinates; } }
// 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/ const componentNames = [ 'accordion', 'action-sheet', 'autocomplete', 'bar-gauge', 'box', 'bullet', 'button-group', 'button', 'calendar', 'card-view', 'chart', 'chat', 'check-box', 'circular-gauge', 'color-box', 'context-menu', 'data-grid', 'date-box', 'date-range-box', 'defer-rendering', 'diagram', 'draggable', 'drawer', 'drop-down-box', 'drop-down-button', 'file-manager', 'file-uploader', 'filter-builder', 'form', 'funnel', 'gallery', 'gantt', 'html-editor', 'linear-gauge', 'list', 'load-indicator', 'load-panel', 'lookup', 'map', 'menu', 'multi-view', 'nested', 'number-box', 'pagination', 'pie-chart', 'pivot-grid-field-chooser', 'pivot-grid', 'polar-chart', 'popover', 'popup', 'progress-bar', 'radio-group', 'range-selector', 'range-slider', 'recurrence-editor', 'resizable', 'responsive-box', 'sankey', 'scheduler', 'scroll-view', 'select-box', 'slider', 'sortable', 'sparkline', 'speech-to-text', 'speed-dial-action', 'splitter', 'stepper', 'switch', 'tab-panel', 'tabs', 'tag-box', 'text-area', 'text-box', 'tile-view', 'toast', 'toolbar', 'tooltip', 'tree-list', 'tree-map', 'tree-view', 'validation-group', 'validation-summary', 'validator', 'vector-map', ]; window.exports = window.exports || {}; window.config = { transpiler: 'ts', typescriptOptions: { module: 'system', emitDecoratorMetadata: true, experimentalDecorators: true, }, meta: { 'typescript': { 'exports': 'ts', }, 'devextreme-dist/js/vectormap-data/*': { 'esModule': true, }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, '@angular/platform-browser-dynamic': { 'esModule': true, }, '@angular/platform-browser': { 'esModule': true, }, '@angular/core': { 'esModule': true, }, '@angular/common': { 'esModule': true, }, '@angular/common/http': { 'esModule': true, }, '@angular/animations': { 'esModule': true, }, '@angular/forms': { 'esModule': true, }, 'openai': { 'esModule': true, }, }, paths: { 'npm:': 'https://cdn.jsdelivr.net/npm/', 'bundles:': '../../../../bundles/', 'externals:': '../../../../bundles/externals/', 'anti-forgery:': '../../../../shared/anti-forgery/', }, map: { 'anti-forgery': 'anti-forgery:fetch-override.js', 'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js', 'typescript': 'npm:typescript@4.2.4/lib/typescript.js', 'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js', /* @angular */ '@angular/compiler': 'bundles:@angular/compiler.umd.js', '@angular/platform-browser-dynamic': 'bundles:@angular/platform-browser-dynamic.umd.js', '@angular/core': 'bundles:@angular/core.umd.js', '@angular/core/primitives/signals': 'bundles:@angular/core.primitives.signals.umd.js', '@angular/core/primitives/di': 'bundles:@angular/core.primitives.di.umd.js', '@angular/common': 'bundles:@angular/common.umd.js', '@angular/common/http': 'bundles:@angular/common-http.umd.js', '@angular/platform-browser': 'bundles:@angular/platform-browser.umd.js', '@angular/platform-browser/animations': 'bundles:@angular/platform-browser.umd.js', '@angular/forms': 'bundles:@angular/forms.umd.js', /* devextreme */ 'devextreme': 'npm:devextreme@link:../../packages/devextreme/artifacts/npm/devextreme/cjs', 'devextreme-quill': 'npm:devextreme-quill@1.7.9/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.29', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.69', /* devextreme-angular umd maps */ 'devextreme-angular': 'bundles:devextreme-angular/devextreme-angular.umd.js', 'devextreme-angular/common/ai-integration': 'bundles:devextreme-angular/devextreme-angular-common-ai-integration.umd.js', 'devextreme-angular/core': 'bundles:devextreme-angular/devextreme-angular-core.umd.js', 'devextreme-angular/common/charts': 'bundles:devextreme-angular/devextreme-angular-common-charts.umd.js', 'devextreme-angular/common/core/animation': 'bundles:devextreme-angular/devextreme-angular-common-core-animation.umd.js', 'devextreme-angular/common/core/environment': 'bundles:devextreme-angular/devextreme-angular-common-core-environment.umd.js', 'devextreme-angular/common/core/events': 'bundles:devextreme-angular/devextreme-angular-common-core-events.umd.js', 'devextreme-angular/common/core/localization': 'bundles:devextreme-angular/devextreme-angular-common-core-localization.umd.js', 'devextreme-angular/common/core': 'bundles:devextreme-angular/devextreme-angular-common-core.umd.js', 'devextreme-angular/common/data/custom-store': 'bundles:devextreme-angular/devextreme-angular-common-data-custom-store.umd.js', 'devextreme-angular/common/data': 'bundles:devextreme-angular/devextreme-angular-common-data.umd.js', 'devextreme-angular/common/export/excel': 'bundles:devextreme-angular/devextreme-angular-common-export-excel.umd.js', 'devextreme-angular/common/export/pdf': 'bundles:devextreme-angular/devextreme-angular-common-export-pdf.umd.js', 'devextreme-angular/common/export': 'bundles:devextreme-angular/devextreme-angular-common-export.umd.js', 'devextreme-angular/common/grids': 'bundles:devextreme-angular/devextreme-angular-common-grids.umd.js', 'devextreme-angular/common': 'bundles:devextreme-angular/devextreme-angular-common.umd.js', 'devextreme-angular/http': 'bundles:devextreme-angular/devextreme-angular-http.umd.js', 'devextreme-angular/core/tokens': 'bundles:devextreme-angular/devextreme-angular-core-tokens.umd.js', ...componentNames.reduce((acc, name) => { acc[`devextreme-angular/ui/${name}`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}.umd.js`; acc[`devextreme-angular/ui/${name}/nested`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}-nested.umd.js`; return acc; }, {}), 'tslib': 'npm:tslib/tslib.js', 'rxjs': 'npm:rxjs@7.5.3/dist/bundles/rxjs.umd.js', 'rxjs/operators': 'npm:rxjs@7.5.3/dist/cjs/operators/index.js', 'devextreme-dist/js/vectormap-data': '../../../../js/vectormap-data', 'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js', 'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign', 'inferno': 'npm:inferno@8.2.3/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@8.2.3/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js', '@preact/signals-core': 'npm:@preact/signals-core@1.14.1/dist/signals-core.min.js', // Prettier 'prettier/standalone': 'npm:prettier@2.8.8/standalone.js', 'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js', 'zone.js': 'npm:zone.js@0.15.1/bundles/zone.umd.js', }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts', }, 'devextreme': { defaultExtension: 'js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/common/core/events/utils': { main: 'index', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, 'rxjs': { defaultExtension: 'js', }, 'rxjs/operators': { defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:rxjs@7.5.3/package.json', 'npm:rxjs@7.5.3/operators/package.json', 'npm:devexpress-diagram@2.2.29/package.json', 'npm:devexpress-gantt@4.1.69/package.json', ], }; window.process = { env: { NODE_ENV: 'production', }, }; System.config(window.config); // eslint-disable-next-line no-console // System.import('@angular/compiler').catch(console.error.bind(console)); // eslint-disable-next-line const useTgzInCSB = ['openai']; let packagesInfo = { "@angular/core": { "version": "21.2.11" }, "core-js": { "version": "2.6.12" }, "typescript": { "version": "5.9.3" }, "zone.js": { "version": "0.15.1" } };
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" 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/25.2.8/css/dx.light.css" /> <script src="https://cdn.jsdelivr.net/npm/core-js@2.6.12/client/shim.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/zone.js@0.15.1/bundles/zone.umd.js"></script> <script src="https://cdn.jsdelivr.net/npm/reflect-metadata@0.1.13/Reflect.js"></script> <script src="https://cdn.jsdelivr.net/npm/systemjs@0.21.3/dist/system.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</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>

To show or hide the control bar, enable or disable the panVisible and zoomVisible properties. You can toggle switches under the map to see how these settings affect the control bar.