US Choropleth (Angular)

The demo shows choropleth visualization. Each state is coloured according to its average yearly temperature. Note that temperature data is loaded from another data source.

This example uses Angular.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import { Component, enableProdMode, NgModule, ViewChild } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import { WjChartModule } from '@grapecity/wijmo.angular2.chart'; import { WjChartMapModule } from '@grapecity/wijmo.angular2.chart.map'; import { httpRequest } from "@grapecity/wijmo"; import { Palettes } from "@grapecity/wijmo.chart"; import { FlexMap } from "@grapecity/wijmo.chart.map"; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { @ViewChild('map') map: FlexMap; // dataMap = new Map(); colors = Palettes.Diverging.RdYlBu; binding = (o: any) => this.dataMap.get(o.properties.name); scale = (v: number) => 1 - v; // ngOnInit() { httpRequest('data/temp.json', { success: xhr => { JSON.parse(xhr.responseText).forEach((el: any) => this.dataMap.set(el.State, parseFloat(el.AverageTemperature))); } }); } // zoomTo(layer: any) { this.map.zoomTo(layer.getGeoBBox()); } // tooltipContent = (f: any) => f.name + ' ' + this.dataMap.get(f.name) + '°F'; } // @NgModule({ imports: [BrowserModule, WjChartMapModule, WjChartModule], declarations: [AppComponent], bootstrap: [AppComponent] }) // export class AppModule { } // enableProdMode(); // Bootstrap application with hash style navigation and global services. platformBrowserDynamic().bootstrapModule(AppModule);
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo US Choropleth</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/dist/zone.min.js"></script> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.js"></script> <script src="systemjs.config.js"></script> <script> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html>
<div class="container-fluid"> <wj-flex-map #map header="Average Temperature By State" [tooltipContent]="tooltipContent"> <wj-geo-map-layer #layer url="data/US.json" (itemsSourceChanged)="zoomTo(layer)"> <wj-color-scale [colors]="colors" [binding]="binding" [scale]="scale" format='n0"°F"'></wj-color-scale> </wj-geo-map-layer> <wj-flex-chart-legend position="Left"></wj-flex-chart-legend> </wj-flex-map> </div>
body { margin-bottom: 24px; } .wj-flexmap { max-width: 600px; }
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extension packages: { src: { defaultExtension: 'ts' }, rxjs: { defaultExtension: 'js' }, // 'rxjs': {main: 'index.js', defaultExtension: 'js' }, // 'rxjs/ajax': {main: 'index.js', defaultExtension: 'js' }, //'rxjs/operators': {main: 'index.js', defaultExtension: 'js' }, // 'rxjs/testing': {main: 'index.js', defaultExtension: 'js' }, // 'rxjs/webSocket': {main: 'index.js', defaultExtension: 'js' }, "node_modules": { defaultExtension: 'js' }, wijmo: { defaultExtension: 'js', } } }); })(this);