Angular Geographic Symbol Map

In Angular map component, you can use the GeographicSymbolSeries to display geo-spatial data using points or markers in a geographic context. This type of geographic series is often used to render a collection of geographic locations such as cities, airports, earthquakes, or points of interests.

Angular Geographic Symbol Map Example

Data Requirements

Similarly to other types of geographic series in the map component, the GeographicSymbolSeries has the DataSource property which can be bound to an array of objects. In addition, each data item in this object must have two numeric data columns that store a geographic location (longitude and latitude). These data columns are then mapped to the LatitudeMemberPath and LongitudeMemberPath properties. The GeographicSymbolSeries uses values of these mapped data columns to plot symbol elements in the geographic map component.

Code Snippet

The following code shows how to bind the GeographicSymbolSeries to locations of cities loaded from a shape file using the IgxShapefileRecord.

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

<ng-template let-series="series" let-item="item" #template>
        <div>
            <div *ngIf="item.org;then hasOrg; else notOrg" ></div>
            <span [style.color]="series.brush">
                {{item.name}}
            </span>
            <br/>
            <span>
                Population {{item.pop}} M
            </span>
        </div>
        <ng-template #hasOrg>
            <span>
                Population {{item.pop}} M
            </span>
            <br />
        </ng-template>
         <ng-template #notOrg>
            <span>
            </span>
         </ng-template>
</ng-template>

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

@Component({
  selector: "app-map-geographic-scatter-symbol-series",
  styleUrls: ["./map-geographic-scatter-symbol-series.component.scss"],
  templateUrl: "./map-geographic-scatter-symbol-series.component.html"
})

export class MapTypeScatterSymbolSeriesComponent implements AfterViewInit {

    @ViewChild ("map")
    public map: IgxGeographicMapComponent;
    @ViewChild("template")
    public tooltip: TemplateRef<object>;

    constructor() {
    }

    public ngAfterViewInit(): void {
      this.addSeriesWith(WorldLocations.getCities(), "Gray");
      this.addSeriesWith(WorldLocations.getCapitals(), "rgb(32, 146, 252)");
    }

    public addSeriesWith(locations: any[], brush: string) {
        const symbolSeries = new IgxGeographicSymbolSeriesComponent ();
        symbolSeries.dataSource = locations;
        symbolSeries.markerType = MarkerType.Circle;
        symbolSeries.latitudeMemberPath = "lat";
        symbolSeries.longitudeMemberPath = "lon";
        symbolSeries.markerBrush  = "White";
        symbolSeries.markerOutline = brush;
        symbolSeries.tooltipTemplate = this.tooltip;
        this.map.series.add(symbolSeries);
    }
}

API References