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Backend API
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import React from 'react';import VectorMap, { ILayerProps, ILegendProps, ITooltipProps, Label, Layer, Legend, Source, Tooltip,} from 'devextreme-react/vector-map';import * as mapsData from 'devextreme-dist/js/vectormap-data/world.js';import { populations, markers } from './data.ts';const colorGroups = [0, 0.5, 0.8, 1, 2, 3, 100];const sizeGroups = [0, 8000, 10000, 50000];const bounds = [-180, 85, 180, -75];const customizeText = (arg: { index: number; start: any; end: any; }) => { if (arg.index === 0) { return '< 0.5%'; } if (arg.index === 5) { return '> 3%'; } return `${arg.start}% to ${arg.end}%`;};const customizeTooltip: ITooltipProps['customizeTooltip'] = (arg) => ({ text: arg.attribute('text'),});const customizeMarkers: ILegendProps['customizeText'] = (arg) => ['< 8000K', '8000K to 10000K', '> 10000K'][arg.index];const customizeItems: ILegendProps['customizeItems'] = (items) => items.reverse();const customizeLayer: ILayerProps['customize'] = (elements) => { elements.forEach((element) => { const name = element.attribute('name'); const population = populations[name]; if (population) { element.attribute('population', population); } });};export default function App() { return ( <VectorMap id="vector-map" bounds={bounds}> <Layer dataSource={mapsData.world} name="areas" palette="Violet" colorGroups={colorGroups} colorGroupingField="population" customize={customizeLayer}> <Label enabled={true} dataField="name"></Label> </Layer> <Layer dataSource={markers} name="markers" elementType="bubble" dataField="value" sizeGroups={sizeGroups} opacity={0.8}> <Label enabled={false}></Label> </Layer> <Legend title="World Population<br/>Percentages" horizontalAlignment="left" verticalAlignment="bottom" customizeItems={customizeItems} customizeText={customizeText}> <Source layer="areas" grouping="color"></Source> </Legend> <Legend title="City Population" markerShape="circle" horizontalAlignment="right" verticalAlignment="bottom" customizeItems={customizeItems} customizeText={customizeMarkers}> <Source layer="markers" grouping="size"></Source> </Legend> <Tooltip enabled={true} customizeTooltip={customizeTooltip} /> </VectorMap> );}xxxxxxxxxximport React from 'react';import VectorMap, { Label, Layer, Legend, Source, Tooltip,} from 'devextreme-react/vector-map';import * as mapsData from 'devextreme-dist/js/vectormap-data/world.js';import { populations, markers } from './data.js';const colorGroups = [0, 0.5, 0.8, 1, 2, 3, 100];const sizeGroups = [0, 8000, 10000, 50000];const bounds = [-180, 85, 180, -75];const customizeText = (arg) => { if (arg.index === 0) { return '< 0.5%'; } if (arg.index === 5) { return '> 3%'; } return `${arg.start}% to ${arg.end}%`;};const customizeTooltip = (arg) => ({ text: arg.attribute('text'),});const customizeMarkers = (arg) => ['< 8000K', '8000K to 10000K', '> 10000K'][arg.index];const customizeItems = (items) => items.reverse();const customizeLayer = (elements) => { elements.forEach((element) => { const name = element.attribute('name'); const population = populations[name]; if (population) { element.attribute('population', population); } });};export default function App() { return ( <VectorMap id="vector-map" bounds={bounds} > <Layer dataSource={mapsData.world} name="areas" palette="Violet" colorGroups={colorGroups} colorGroupingField="population" customize={customizeLayer} > <Label enabled={true} dataField="name" ></Label> </Layer> <Layer dataSource={markers} name="markers" elementType="bubble" dataField="value" sizeGroups={sizeGroups} opacity={0.8} > <Label enabled={false}></Label> </Layer> <Legend title="World Population<br/>Percentages" horizontalAlignment="left" verticalAlignment="bottom" customizeItems={customizeItems} customizeText={customizeText} > <Source layer="areas" grouping="color" ></Source> </Legend> <Legend title="City Population" markerShape="circle" horizontalAlignment="right" verticalAlignment="bottom" customizeItems={customizeItems} customizeText={customizeMarkers} > <Source layer="markers" grouping="size" ></Source> </Legend> <Tooltip enabled={true} customizeTooltip={customizeTooltip} /> </VectorMap> );}xxxxxxxxxximport React from 'react';import ReactDOM from 'react-dom';import App from './App.tsx';ReactDOM.render( <App />, document.getElementById('app'),);xxxxxxxxxxexport const populations = { China: 19, India: 17.4, 'United States': 4.44, Indonesia: 3.45, Brazil: 2.83, 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, Turkey: 1.07, 'Democratic Republic of the Congo': 0.94, France: 0.92, Thailand: 0.9, 'United Kingdom': 0.89, Italy: 0.85, Burma: 0.84, 'South Africa': 0.74, 'South 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, Morocco: 0.46, Uzbekistan: 0.43,};export const markers = { type: 'FeatureCollection', features: [ { coordinates: [-74, 40.7], text: 'New York City', value: 8406, }, { coordinates: [100.47, 13.75], text: 'Bangkok', value: 8281, }, { coordinates: [37.62, 55.75], text: 'Moscow', value: 12111, }, { coordinates: [121.5, 31.2], text: 'Shanghai', value: 24150, }, { coordinates: [-43.18, -22.9], text: 'Rio de Janeiro', value: 6429, }, { coordinates: [31.23, 30.05], text: 'Cairo', value: 8922, }, { coordinates: [28.95, 41], text: 'Istanbul', value: 14160, }, { coordinates: [127, 37.55], text: 'Seoul', value: 10388, }, { coordinates: [139.68, 35.68], text: 'Tokyo', value: 9071, }, { coordinates: [103.83, 1.28], text: 'Singapore', value: 5399, }, { coordinates: [30.3, 59.95], text: 'Saint Petersburg', value: 5131, }, { coordinates: [28.03, -26.2], text: 'Johannesburg', value: 4434, }, { coordinates: [144.95, -37.8], text: 'Melbourne', value: 4252, }, ].map((data) => ({ type: 'Feature', geometry: { type: 'Point', coordinates: data.coordinates, }, properties: { value: data.value, text: data.text, }, })),};xxxxxxxxxxwindow.exports = window.exports || {};window.config = { transpiler: 'ts', typescriptOptions: { module: 'system', emitDecoratorMetadata: true, experimentalDecorators: true, jsx: 'react', }, meta: { 'react': { 'esModule': true, }, 'typescript': { 'exports': 'ts', }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, 'devextreme-dist/js/vectormap-data/*': { 'esModule': true, }, 'openai': { 'esModule': true, }, }, paths: { 'npm:': 'https://unpkg.com/', 'bundles:': 'bundles/', 'externals:': 'bundles/externals/', }, defaultExtension: 'js', map: { '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', 'react': 'npm:react@17.0.2/umd/react.development.js', 'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js', 'prop-types': 'npm:prop-types/prop-types.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', 'devextreme': 'npm:devextreme@24.2.6/cjs', 'devextreme-react': 'npm:devextreme-react@24.2.6/cjs', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.15/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.60/dist/dx-gantt.js', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12', 'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.11/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', 'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js', // Prettier 'prettier/standalone': 'npm:prettier@2.8.8/standalone.js', 'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js', }, packages: { 'devextreme': { defaultExtension: 'js', }, 'devextreme-react': { main: 'index.js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/common/core/events/utils': { main: 'index', }, 'devextreme/localization/messages': { format: 'json', defaultExtension: 'json', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:@devextreme/runtime@3.0.12/inferno/package.json', ], babelOptions: { sourceMaps: false, stage0: true, react: true, },};System.config(window.config);xxxxxxxxxximport React from 'react';import ReactDOM from 'react-dom';import App from './App.js';ReactDOM.render(<App />, document.getElementById('app'));xxxxxxxxxxexport const populations = { China: 19, India: 17.4, 'United States': 4.44, Indonesia: 3.45, Brazil: 2.83, 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, Turkey: 1.07, 'Democratic Republic of the Congo': 0.94, France: 0.92, Thailand: 0.9, 'United Kingdom': 0.89, Italy: 0.85, Burma: 0.84, 'South Africa': 0.74, 'South 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, Morocco: 0.46, Uzbekistan: 0.43,};export const markers = { type: 'FeatureCollection', features: [ { coordinates: [-74, 40.7], text: 'New York City', value: 8406, }, { coordinates: [100.47, 13.75], text: 'Bangkok', value: 8281, }, { coordinates: [37.62, 55.75], text: 'Moscow', value: 12111, }, { coordinates: [121.5, 31.2], text: 'Shanghai', value: 24150, }, { coordinates: [-43.18, -22.9], text: 'Rio de Janeiro', value: 6429, }, { coordinates: [31.23, 30.05], text: 'Cairo', value: 8922, }, { coordinates: [28.95, 41], text: 'Istanbul', value: 14160, }, { coordinates: [127, 37.55], text: 'Seoul', value: 10388, }, { coordinates: [139.68, 35.68], text: 'Tokyo', value: 9071, }, { coordinates: [103.83, 1.28], text: 'Singapore', value: 5399, }, { coordinates: [30.3, 59.95], text: 'Saint Petersburg', value: 5131, }, { coordinates: [28.03, -26.2], text: 'Johannesburg', value: 4434, }, { coordinates: [144.95, -37.8], text: 'Melbourne', value: 4252, }, ].map((data) => ({ type: 'Feature', geometry: { type: 'Point', coordinates: data.coordinates, }, properties: { value: data.value, text: data.text, }, })),};xxxxxxxxxx<html lang="en"> <head></head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body></html>xxxxxxxxxx#vector-map { height: 700px;}