Backend API
import React from 'react';
import VectorMap, {
Label,
Layer,
Legend,
Source,
Tooltip,
} from 'devextreme-react/vector-map';
import type { ILayerProps, ILegendProps, ITooltipProps } from 'devextreme-react/vector-map';
import * as mapsData from 'devextreme-dist/js/vectormap-data/world.js';
import { populations, markers } from './data.ts';
import type { PopulationKey } 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: ILegendProps['customizeText'] = (arg) => {
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') as PopulationKey;
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>
);
}
import 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>
);
}
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
export 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 type PopulationKey = keyof typeof populations;
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,
},
})),
};
declare module 'devextreme-dist/js/vectormap-data/world.js' {
type Position = number[];
type Geometry =
| { type: 'Point'; coordinates: Position }
| { type: 'MultiPoint'; coordinates: Position[] }
| { type: 'LineString'; coordinates: Position[] }
| { type: 'MultiLineString'; coordinates: Position[][] }
| { type: 'Polygon'; coordinates: Position[][] }
| { type: 'MultiPolygon'; coordinates: Position[][][] };
interface Feature {
type: 'Feature';
geometry: Geometry;
properties: Record<string, unknown>;
}
interface FeatureCollection {
type: 'FeatureCollection';
features: Feature[];
// eslint-disable-next-line spellcheck/spell-checker
bbox?: number[];
}
const world: FeatureCollection;
export { world };
export default world;
}
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
export 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,
},
})),
};
<!DOCTYPE html>
<html 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/26.1.5/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="./bundle.css" />
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
<script src="bundles/vendor/react.vendor.js"></script>
<script src="./bundle.js"></script>
</body>
</html>
#vector-map {
height: 700px;
}