Angular Binding Geographic Data Models

The Ignite UI for Angular map component is designed to display geo-spatial data from shape files and/or geographic locations from data models on geographic imagery maps. The DataSource property of geographic series is used for the purpose of binding to data models. This property can be bound an array of custom objects.

Angular Binding Geographic Data Models Example

The following table summarized data structures required for each type of geographic series:

Code Snippet

The following code shows how to bind the GeographicSymbolSeries to a custom data model that contains geographic locations of some cities of the world stored using longitude and latitude coordinates. Also, we use the GeographicPolylineSeries to plot shortest geographic path between these locations using the WorldUtility

<div className="sampleRoot" >
    <igx-geographic-map #map
        width="700px"
        height="500px"
        zoomable="true" >
    </igx-geographic-map>
</div>

<ng-template let-series="series" let-item="item" #pointSeriesTemplate>
        <div>
            <span [style.color]="series.brush">
                {{item.country}}
            </span>
        </div>
</ng-template>

<ng-template let-series="series" let-item="item" #polylineSeriesTooltipTemplate>
    <div>
        <span [style.color]="series.brush">
            Departure: {{item.origin.country}}
        </span>
        <br/>
        <span [style.color]="series.brush">
            Arrival: {{item.dest.country}}
        </span>
    </div>
</ng-template>

import { AfterViewInit, Component, TemplateRef, ViewChild } from "@angular/core";
import { MarkerType } from 'igniteui-angular-charts';
import { IgxGeographicMapComponent } from 'igniteui-angular-maps';
import { IgxGeographicPolylineSeriesComponent } from "igniteui-angular-maps";
import { IgxGeographicSymbolSeriesComponent } from 'igniteui-angular-maps';
import { WorldUtils } from "../../utilities/WorldUtils";

@Component({
  selector: "app-map-binding-geographic-data-models",
  styleUrls: ["./map-binding-geographic-data-models.component.scss"],
  templateUrl: "./map-binding-geographic-data-models.component.html"
})

export class MapBindingDataModelComponent implements AfterViewInit {

    @ViewChild ("map")
    public map: IgxGeographicMapComponent;
    @ViewChild("pointSeriesTemplate")
    public pointSeriesTemplate: TemplateRef<object>;
    @ViewChild("polylineSeriesTooltipTemplate")
    public polylineSeriesTooltipTemplate: TemplateRef<object>;
    public flights: any[];
    constructor() {
    }

    public ngAfterViewInit(): void {
        const cityDAL = { lat:  32.763, lon: -96.663, country: "US", name: "Dallas" };
        const citySYD = { lat: -33.889, lon: 151.028, country: "Australia", name: "Sydney" };
        const cityNZL = { lat: -36.848, lon: 174.763, country: "New Zealand", name: "Auckland" };
        const cityQTR = { lat: 25.285, lon:  51.531,  country: "Qatar", name: "Doha" };
        const cityPAN = { lat:  8.949, lon: -79.400,  country: "Panama", name: "Panama" };
        const cityCHL = { lat: -33.475, lon: -70.647, country: "Chile", name: "Santiago" };
        const cityJAP = { lat:  35.683, lon: 139.809, country: "Japan", name: "Tokyo" };
        const cityALT = { lat: 33.795,  lon: -84.349, country: "US", name: "Atlanta" };
        const cityJOH = { lat: -26.178, lon: 28.004,  country: "South Africa", name: "Johannesburg" };
        const cityNYC = { lat: 40.750, lon: -74.0999, country: "US", name: "New York" };
        const citySNG = { lat:  1.229, lon: 104.177,  country: "Singapore", name: "Singapore" };
        const cityMOS = { lat: 55.750, lon:  37.700,  country: "Russia", name: "Moscow" };
        const cityROM = { lat:  41.880, lon: 12.520,  country: "Italy", name: "Roma" };
        const cityLAX = { lat: 34.000, lon: -118.25,  country: "US", name: "Los Angeles" };

        this.flights = [
            { origin: cityDAL, dest: citySNG, color: "Green" },
            { origin: cityMOS, dest: cityNZL, color: "Red" },
            { origin: cityCHL, dest: cityJAP, color: "Blue" },
            { origin: cityPAN, dest: cityROM, color: "Orange" },
            { origin: cityALT, dest: cityJOH, color: "Black" },
            { origin: cityNYC, dest: cityQTR, color: "Purple" },
            { origin: cityLAX, dest: citySYD, color: "Gray" }
        ];

        for (const flight of this.flights) {
            this.createPolylineSeries(flight);
            this.createSymbolSeries(flight);
        }
    }

    public createSymbolSeries(flight: any) {
        const geoLocations = [flight.origin, flight.dest ];
        const symbolSeries = new IgxGeographicSymbolSeriesComponent ();
        symbolSeries.dataSource = geoLocations;
        symbolSeries.markerType = MarkerType.Circle;
        symbolSeries.latitudeMemberPath = "lat";
        symbolSeries.longitudeMemberPath = "lon";
        symbolSeries.markerBrush  = "White";
        symbolSeries.markerOutline = flight.color;
        symbolSeries.thickness = 1;
        symbolSeries.tooltipTemplate = this.pointSeriesTemplate;

        this.map.series.add(symbolSeries);
    }

    public createPolylineSeries(flight: any) {
        const geoPath = WorldUtils.calcPaths(flight.origin, flight.dest);
        const geoDistance = WorldUtils.calcDistance(flight.origin, flight.dest);
        const geoRoutes = [
            {
              dest: flight.dest,
              distance: geoDistance,
              origin: flight.origin,
              points: geoPath,
              time: geoDistance / 850
        }];

        const lineSeries = new IgxGeographicPolylineSeriesComponent ();
        lineSeries.dataSource = geoRoutes;
        lineSeries.shapeMemberPath = "points";
        lineSeries.shapeStrokeThickness = 9;
        lineSeries.shapeOpacity = 0.5;
        lineSeries.shapeStroke = flight.color;
        lineSeries.tooltipTemplate = this.polylineSeriesTooltipTemplate;
        this.map.series.add(lineSeries);
    }
}

API References