Custom Projection

import { NgModule, Component, enableProdMode } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxVectorMapModule } from 'devextreme-angular'; import * as mapsData from 'devextreme/dist/js/vectormap-data/world.js'; import { FeatureCollection, Service } from './app.service'; const RADIANS = Math.PI / 180, WAGNER_6_P_LAT = Math.PI / Math.sqrt(3), WAGNER_6_U_LAT = 2 / Math.sqrt(3) - 0.1; if(!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', providers: [ Service ], templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'] }) export class AppComponent { worldMap: any = mapsData.world; customProjection: any; coordLinesData: FeatureCollection; constructor(service: Service) { this.coordLinesData = service.getCoordLinesData(); this.customProjection = { aspectRatio: 2, to: function (coordinates) { let x = coordinates[0] * RADIANS, y = Math.min(Math.max(coordinates[1] * RADIANS, -WAGNER_6_P_LAT), +WAGNER_6_P_LAT), t = y / Math.PI; return [ x / Math.PI * Math.sqrt(1 - 3 * t * t), y * 2 / Math.PI ]; }, from: function (coordinates) { let x = coordinates[0], y = Math.min(Math.max(coordinates[1], -WAGNER_6_U_LAT), +WAGNER_6_U_LAT), t = y / 2; return [ x * Math.PI / Math.sqrt(1 - 3 * t * t) / RADIANS, y * Math.PI / 2 / RADIANS ]; } }; } } @NgModule({ imports: [ BrowserModule, DxVectorMapModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);

::ng-deep #vector-map { height: 400px; }

import { Injectable } from '@angular/core'; export class FeatureCollection { type: string; features: Feature[]; } export class Feature { geometry: FeatureGeometry; } export class FeatureGeometry { type: string; coordinates: number[][]; } let coordLinesData: FeatureCollection = { type: "FeatureCollection", features: [] }; //add meridians for (let longitude = -180; longitude <= 180; longitude += 30) { let lineCoords = []; for (var latitude = -90; latitude <= 90; latitude += 5) { lineCoords.push([longitude, latitude]); } coordLinesData.features.push({ geometry: { type: "LineString", coordinates: lineCoords } }); } //add parallels for (let latitude = -90; latitude <= 90; latitude += 30) { coordLinesData.features.push({ geometry: { type: "LineString", coordinates: [[ -180, latitude ], [ 180, latitude]] } }); } @Injectable() export class Service { getCoordLinesData(): FeatureCollection { return coordLinesData; } }

// 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/ System.config({ transpiler: 'ts', typescriptOptions: { module: "system", emitDecoratorMetadata: true, experimentalDecorators: true }, meta: { 'typescript': { "exports": "ts" }, 'devextreme/dist/js/vectormap-data/*': { 'esModule': true }, 'devextreme/localization.js': { "esModule": true } }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js', 'typescript': 'npm:typescript@3.5.3/lib/typescript.js', '@angular': 'npm:@angular', 'tslib': 'npm:tslib@2.1.0/tslib.js', 'rxjs': 'npm:rxjs@6.4.0', 'devextreme/dist/js/vectormap-data': 'js/vectormap-data', 'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.25.0/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@20.2.5', 'jszip': 'npm:jszip@3.5.0/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@0.9.8/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.0.11', 'devexpress-gantt': 'npm:devexpress-gantt@2.0.18', 'devextreme-angular': 'npm:devextreme-angular@20.2.5', 'preact': 'npm:preact@10.5.11/dist/preact.js', 'preact/hooks': 'npm:preact@10.5.11/hooks/dist/hooks.js' }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts' }, 'devextreme': { defaultExtension: 'js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js' } }, packageConfigPaths: [ "npm:@angular/*/package.json", "npm:@angular/common/*/package.json", "npm:rxjs/package.json", "npm:rxjs/operators/package.json", "npm:devextreme-angular/*/package.json", "npm:devextreme-angular/ui/*/package.json", "npm:devextreme-angular/package.json", "npm:devexpress-diagram/package.json", "npm:devexpress-gantt/package.json", ] });

<!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" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.5/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.5/css/dx.light.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/zone.js@0.10.2/dist/zone.js"></script> <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script src="https://unpkg.com/jquery@3.5.1/dist/jquery.min.js"></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>