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Vector Map

Palette

Documentation

This demo shows how to color specific map areas using a palette. In the VectorMap component, a palette defines a range of colors that are used to paint areas. This range is divided into segments using the value assigned to the colorGroups property. Each segment contributes a color into an array of colors.

The map in this demo represents the top 40 countries by population. Map areas are colored according to the percentage of population.

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const DemoApp = angular.module('DemoApp', ['dx']); DemoApp.controller('DemoController', ($scope) => { $scope.vectorMapOptions = { bounds: [-180, 85, 180, -60], layers: { name: 'areas', dataSource: DevExpress.viz.map.sources.world, palette: 'Violet', colorGroups: [0, 0.5, 0.8, 1, 2, 3, 100], colorGroupingField: 'population', customize(elements) { elements.forEach((element) => { element.attribute('population', populations[element.attribute('name')]); }); }, }, legends: [{ source: { layer: 'areas', grouping: 'color' }, customizeText(arg) { let text; if (arg.index === 0) { text = '< 0.5%'; } else if (arg.index === 5) { text = '> 3%'; } else { text = `${arg.start}% to ${arg.end}%`; } return text; }, }], tooltip: { enabled: true, customizeTooltip(arg) { if (arg.attribute('population')) { return { text: `${arg.attribute('name')}: ${arg.attribute('population')}% of world population` }; } return null; }, }, }; });
<!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/21.2.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.3/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/21.2.3/js/dx.all.js"></script> <script src="https://cdn3.devexpress.com/jslib/21.2.3/js/vectormap-data/world.js"></script> <script src="https://cdn3.devexpress.com/jslib/21.2.3/js/vectormap-data/africa.js"></script> <script src="https://cdn3.devexpress.com/jslib/21.2.3/js/vectormap-data/canada.js"></script> <script src="https://cdn3.devexpress.com/jslib/21.2.3/js/vectormap-data/eurasia.js"></script> <script src="https://cdn3.devexpress.com/jslib/21.2.3/js/vectormap-data/europe.js"></script> <script src="https://cdn3.devexpress.com/jslib/21.2.3/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> </body> </html>
#vector-map { height: 440px; }
const populations = { China: 19, India: 17.4, 'United States': 4.44, Indonesia: 3.45, Brazil: 2.83, Pakistan: 2.62, Nigeria: 2.42, Bangladesh: 2.18, Russia: 2.04, Japan: 1.77, Mexico: 1.67, Philippines: 1.39, Vietnam: 1.25, Ethiopia: 1.23, Egypt: 1.21, Germany: 1.13, Iran: 1.08, Turkey: 1.07, 'Congo (Kinshasa)': 0.94, France: 0.92, Thailand: 0.9, 'United Kingdom': 0.89, Italy: 0.85, Burma: 0.84, 'South Africa': 0.74, 'S. Korea': 0.7, Colombia: 0.66, Spain: 0.65, Tanzania: 0.63, Kenya: 0.62, Ukraine: 0.6, Argentina: 0.59, Algeria: 0.54, Poland: 0.54, Sudan: 0.52, Canada: 0.49, Uganda: 0.49, Iraq: 0.47, Morocco: 0.46, Uzbekistan: 0.43, };