Navigation Lines in Angular Maps component

Angular

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20 Apr 2021 / 3 minutes to read

Navigation lines are used to denote the path between the two locations. We can use this feature as flight or train or sea routes.

Customization

You can customize the following properties in the navigation lines by modifying their default values in navigationlineSettings

Color - Specifies the color of navigation line.
Dash array - Specifies the type of dash array line.
Width - Specifies the line width.
Angle - Specifies the navigation line angle.
Highlight settings - Customizes the opacity, border, and fill color when the cursor hovers over it.
Selection settings - Customizes the opacity, border, and fill color when the line is selected.

Following example shows rendering the path between two locations using latitudes and longitudes.

Yon can customize the navigation line color, dashArray, width and angle by modifying their default values in navigationLineSettings.

Refer the below code snippet to navigate line between two cities in World map. Import usmap geo json data from World.ts file. Import the NavigationLineService and Inject into the Maps using NgModule providers. Provide two locations latitude and longitude values to navigationLineSettings.

[app.component.ts]

Source

Preview

app.component.ts

app.module.ts

main.ts

import { Component, ViewEncapsulation, ViewChild, OnInit } from '@angular/core';
import { Maps, NavigationLine } from '@syncfusion/ej2-angular-maps';
import { world_map } from 'world-map.ts';
Maps.Inject(NavigationLine);
@Component({
selector: 'app-container',
template:
`<ejs-maps id='rn-container' >
<e-layers>
<e-layer  [shapeData]= 'shapeData' [navigationLineSettings] = 'navigationLineSettings' ></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent implements OnInit {
ngOnInit(): void {
        public shapeData: Object = world_map;
        public navigationLineSettings: object[] = [{
        visible: true,
        latitude: [37.6276571, -122.4276688],
        longitude: [-74.0060, -117.7418381],
        color: 'black',
        angle: 90,
        width: 2,
        dashArray: '4'
    }],
};
}

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { MapsModule } from '@syncfusion/ej2-angular-maps';
import { LegendService, MarkerService, MapsTooltipService, DataLabelService, BubbleService, NavigationLineService, SelectionService, AnnotationsService, ZoomService } from '@syncfusion/ej2-angular-maps';
/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, MapsModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
     providers: [LegendService, MarkerService, MapsTooltipService, DataLabelService, BubbleService, NavigationLineService , SelectionService, AnnotationsService, ZoomService]
   
})
export class AppModule { }

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

[app.module.ts]

Injecting NavigationLineService into NgModule.

import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
// import the MapsModule for the Maps component
import { MapsModule, NavigationLineService} from '@syncfusion/ej2-angular-maps';
import { AppComponent }  from './app.component';

@NgModule({
  // declaration of ej2-angular-maps module into NgModule
  imports:      [ BrowserModule, MapsModule ],
  declarations: [ AppComponent ],
  providers: [NavigationLineService],
  bootstrap:    [ AppComponent ]
})
export class AppModule { }

Enabling the arrows

You can enable the arrows in the navigation line using arrowSettings.showArrow API, also you can customize following properties in arrow

color - Specifies the color of the arrow
offset - Specifies the arrow’s offset position
position - Specifies the arrow position to start or end line
size - Specifies the arrow size in pixel