Free Trial Buy
    Your search did not match any results.
    Vector Map

    Dynamic Viewport

    Documentation

    This demo illustrates how to change the map’s viewport from code. Choose a continent using the drop-down menu under the map. In response to that, the map changes the visible area so that the chosen continent is displayed optimally. This is performed in code by calling the viewport(viewportCoordinates) method. After that, callback functions assigned to the centerChanged and zoomFactorChanged properties are triggered. These functions place the current values of the map’s center and zoom factor in the text boxes under the map.

    See more Hide details
    Prev Demo Next Demo

    jQuery

    Angular

    Vue

    React

    AngularJS

    ASP.NET Core

    ASP.NET MVC

    Backend API
    Copy to CodePen
    Apply
    Reset
    const DemoApp = angular.module('DemoApp', ['dx']); DemoApp.controller('DemoController', ($scope) => { $scope.zoomFactorValue = '1.00'; $scope.centerValue = '0.000, 46.036'; $scope.vectorMapOptions = { layers: { dataSource: DevExpress.viz.map.sources.world, }, bounds: [-180, 85, 180, -60], onZoomFactorChanged(e) { $scope.zoomFactorValue = e.zoomFactor.toFixed(2); }, onCenterChanged(e) { $scope.centerValue = `${e.center[0].toFixed(3) }, ${e.center[1].toFixed(3)}`; }, }; $scope.chooseContinent = { dataSource: viewportCoordinates, width: 210, displayExpr: 'continent', valueExpr: 'coordinates', value: viewportCoordinates[0].coordinates, onValueChanged(data) { $('#vector-map').dxVectorMap('instance').viewport(data.value); }, }; $scope.zoomFactor = { bindingOptions: { value: 'zoomFactorValue', }, readOnly: true, width: 210, }; $scope.center = { bindingOptions: { value: 'centerValue', }, readOnly: true, width: 210, }; });
    <!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" /> <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> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.1.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.1.3/css/dx.light.css" /> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.8.2/angular.min.js"></script> <script>window.angular || document.write(decodeURIComponent('%3Cscript src="js/angular.min.js"%3E%3C/script%3E'))</script> <script src="https://cdn3.devexpress.com/jslib/22.1.3/js/dx.all.js"></script> <script src="https://cdn3.devexpress.com/jslib/22.1.3/js/vectormap-data/world.js"></script> <script src="https://cdn3.devexpress.com/jslib/22.1.3/js/vectormap-data/africa.js"></script> <script src="https://cdn3.devexpress.com/jslib/22.1.3/js/vectormap-data/canada.js"></script> <script src="https://cdn3.devexpress.com/jslib/22.1.3/js/vectormap-data/eurasia.js"></script> <script src="https://cdn3.devexpress.com/jslib/22.1.3/js/vectormap-data/europe.js"></script> <script src="https://cdn3.devexpress.com/jslib/22.1.3/js/vectormap-data/usa.js"></script> <script src="data.js"></script> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="index.js"></script> </head> <body class="dx-viewport"> <div class="demo-container" ng-app="DemoApp" ng-controller="DemoController"> <div id="vector-map" dx-vector-map="vectorMapOptions"></div> <div class="options"> <div class="caption">Options</div> <div class="option"> <span>Continent</span> <div dx-select-box="chooseContinent"></div> </div> <div class="option"> <span>Zoom factor</span> <div dx-text-box="zoomFactor"></div> </div> <div class="option"> <span>Center</span> <div dx-text-box="center"></div> </div> </div> </div> </body> </html>
    #vector-map { height: 420px; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); margin-top: 20px; } .option { margin-top: 10px; } .caption { font-size: 18px; font-weight: 500; } .option > span { width: 140px; display: inline-block; } .option > .dx-widget { display: inline-block; vertical-align: middle; }
    const viewportCoordinates = [{ 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], }];