Getting started with Angular Maps component
21 Dec 202424 minutes to read
This section explains you the steps required to create a map and demonstrate the basic usage of the maps component.
You can explore some useful features in the Maps component using the following video.
Dependencies
The following is a list of the dependencies required to use the Maps component.
|-- @syncfusion/ej2-angular-maps
|-- @syncfusion/ej2-angular-base
|-- @syncfusion/ej2-angular-maps
|-- @syncfusion/ej2-maps
|-- @syncfusion/ej2-base
|-- @syncfusion/ej2-svg-base
|-- @syncfusion/ej2-data
Setup Angular Environment
You can use Angular CLI
to setup your Angular applications.
To install Angular CLI use the following command.
npm install -g @angular/cli
Create an Angular Application
Start a new Angular application using below Angular CLI command.
ng new my-app
cd my-app
Installing Syncfusion Maps package
Syncfusion packages are distributed in npm as @syncfusion
scoped packages. You can get all the Angular Syncfusion package from npm link.
Currently, Syncfusion provides two types of package structures for Angular components,
- Ivy library distribution package format
- Angular compatibility compiler(Angular’s legacy compilation and rendering pipeline) package.
Ivy library distribution package
Syncfusion Angular packages(>=20.2.36
) has been moved to the Ivy distribution to support the Angular Ivy rendering engine and the package are compatible with Angular version 12 and above. To download the package use the below command.
Add @syncfusion/ej2-angular-maps
package to the application.
npm install @syncfusion/ej2-angular-maps --save
Angular compatibility compiled package(ngcc)
For Angular version below 12, you can use the legacy (ngcc) package of the Syncfusion Angular components. To download the ngcc
package use the below.
Add @syncfusion/ej2-angular-maps@ngcc
package to the application.
npm install @syncfusion/ej2-angular-maps@ngcc --save
To mention the ngcc package in the package.json
file, add the suffix -ngcc
with the package version as below.
@syncfusion/ej2-angular-maps:"20.2.38-ngcc"
Note: If the ngcc tag is not specified while installing the package, the Ivy Library Package will be installed and this package will throw a warning.
Add Maps component
Modify the template in app.component.ts
file to render the Maps component
[src/app/app.component.ts]
.
import { MapsModule } from '@syncfusion/ej2-angular-maps'
import { Component, ViewEncapsulation } from '@angular/core';
@Component({
imports: [
MapsModule
],
standalone: true,
selector: 'app-container',
// specifies the template string for the maps component
template: `<ejs-maps id='maps-container'></ejs-maps>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent { }
Add the world-map data in the app.component.ts file.
Note: Refer the data for world-map here. These data must be imported in the src/app/app.component.ts file.
import { world_map } from './world-map';
Bind the world-map data to the shapeData property of the layer in the Maps control.
@Component({
// specifies the template string for the maps component
template: `<ejs-maps id='maps-container'>
<e-layers>
<e-layer [shapeData] = 'shapeData'></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent {
public shapeData: object = world_map;
}
Now use the app-container
in the index.html instead of default one.
<app-container></app-container>
@Component({
selector: 'app-container'
})
-
Now run the application in the browser using the below command.
npm start
The below example shows a basic map.
import { MapsModule } from '@syncfusion/ej2-angular-maps'
import { Component } from '@angular/core';
import { world_map } from './world-map';
@Component({
imports: [
MapsModule
],
standalone: true,
selector: 'app-root',
// specifies the template string for the maps component
template: `<ejs-maps id='maps-container'>
<e-layers>
<e-layer [shapeData] = 'shapeData'></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent {
public shapeData: object = world_map;
}
Module Injection
Maps component are segregated into individual feature-wise modules. In order to use a particular feature,
you need to inject its feature module using Maps.Inject()
method. Find the modules available in maps and its description as follows.
-
AnnotationsService
- Inject this provider to use annotations feature. -
BubbleService
- Inject this provider to use bubble feature. -
DataLabelService
- Inject this provider to use data label feature. -
HighlightService
- Inject this provider to use highlight feature. -
LegendService
- Inject this provider to use legend feature. -
MarkerService
- Inject this provider to use marker feature. -
MapsTooltipService
- Inject this provider to use tooltip series. -
NavigationLineService
- Inject this provider to use navigation lines feature. -
SelectionService
- Inject this provider to use selection feature. -
ZoomService
- Inject this provider to use zooming and panning feature.
For this application we are going to use tooltip, data label and legend features of the maps.
Now import the MapsTooltip, DataLabel and Legend modules from maps package
@syncfusion/ej2-angular-maps
import { Component } from '@angular/core';
import { LegendService, DataLabelService, MapsTooltipService, MapsModule} from '@syncfusion/ej2-angular-maps';
@NgModule({
imports: [
MapsModule,
],
standalone: true,
providers: [ LegendService, DataLabelService,MapsTooltipService ]
})
Render shapes from GeoJSON data
This section explains how to bind GeoJSON data to the map.
let usMap: object =
{
"type": "FeatureCollection",
"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
"features": [
{ "type": "Feature", "properties": { "iso_3166_2": "MA", "name": "Massachusetts", "admin": "United States of America" }, "geometry":{
"type": "MultiPolygon",
"coordinates": [ [ [ [ -70.801756294617277, 41.248076234530558 ]] ] ] }
}
]
//..
};
Elements in the maps will get rendered in the layers. So add a layer collection to the maps by using [layers
]property. Now bind the GeoJSON data to the [shapeData
] property.
[app.module.ts
]
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { MapsModule } from '@syncfusion/ej2-angular-maps'
import { Component, OnInit } from '@angular/core';
import { world_map } from './world-map';
@Component({
imports: [
MapsModule
],
standalone: true,
selector: 'app-container',
template:
`<ejs-maps id='rn-container'>
<e-layers>
<e-layer [shapeData] = 'shapeData'></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent implements OnInit {
public shapeData?: object;
ngOnInit(): void {
this.shapeData = world_map;
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Bind data source to map
The following properties in layers are used for binding data source to map.
- dataSource
- shapeDataPath
- shapePropertyPath
The dataSource
property takes collection value as input. For example, the list of objects can be provided as input. This data is further used in tooltip, data label, bubble, legend and in color mapping.
The shapeDataPath
property used to refer the data ID in dataSource. Where as, the shapePropertyPath
property is used to refer the column name in shapeData to identify the shape. Both the properties are related to each other. When the values of the shapeDataPath property in the dataSource property and the value of shapePropertyPath in the shapeData property match, then the associated object from the dataSource is bound to the corresponding shape.
The JSON object “electionData” is used as data source below.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { MapsModule } from '@syncfusion/ej2-angular-maps'
import { Component, OnInit } from '@angular/core';
import { world_map } from './world-map';
@Component({
imports: [
MapsModule
],
standalone: true,
selector: 'app-container',
template:
`<ejs-maps id='rn-container' >
<e-layers>
<e-layer [shapeData]= 'shapeData' [shapePropertyPath]= 'shapePropertyPath' [shapeDataPath]= 'shapeDataPath' [dataSource] = 'dataSource'></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent implements OnInit {
public dataSource?: object[];
public shapeData?: object;
public shapePropertyPath?: string;
public shapeDataPath?: string;
ngOnInit(): void {
this.dataSource = [{ "Country": "China", "Membership": "Permanent"},
{"Country": "France","Membership": "Permanent" },
{ "Country": "Russia","Membership": "Permanent"},
{"Country": "Kazakhstan","Membership": "Non-Permanent"},
{ "Country": "Poland","Membership": "Non-Permanent"},
{"Country": "Sweden","Membership": "Non-Permanent"}];
this.shapeData = world_map;
this.shapePropertyPath = 'name';
this.shapeDataPath = 'Country';
};
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Apply Color Mapping
The Color Mapping feature supports customization of shape colors based on the underlying value of shape received from bounded data. Specify the field name from which the values have to be compared for the shapes in colorValuePath
property in shapeSettings
.
Specify color and value in colorMapping
property. Here ‘#D84444’ is specified for ‘Trump’ and ‘#316DB5’ is specified for ‘Clinton’.
[app.module.ts
]
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { MapsModule } from '@syncfusion/ej2-angular-maps'
import { Component, OnInit } from '@angular/core';
import { world_map } from './world-map';
@Component({
imports: [
MapsModule
],
standalone: true,
selector: 'app-container',
template: `<ejs-maps id='rn-container' >
<e-layers>
<e-layer [shapeData]= 'shapeData' [shapePropertyPath]= 'shapePropertyPath' [shapeDataPath]= 'shapeDataPath' [dataSource] = 'dataSource' [shapeSettings] = 'shapeSettings'></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent implements OnInit {
public dataSource?: object[];
public shapeData?: object;
public shapePropertyPath?: string;
public shapeDataPath?: string;
public shapeSettings?: object;
ngOnInit(): void {
this.dataSource = [{ "Country": "China", "Membership": "Permanent"},
{"Country": "France","Membership": "Permanent" },
{ "Country": "Russia","Membership": "Permanent"},
{"Country": "Kazakhstan","Membership": "Non-Permanent"},
{ "Country": "Poland","Membership": "Non-Permanent"},
{"Country": "Sweden","Membership": "Non-Permanent"}];
this.shapeData = world_map;
this.shapePropertyPath = 'name';
this.shapeDataPath = 'Country';
this.shapeSettings = {
colorValuePath: 'Membership',
colorMapping: [
{
value: 'Permanent', color: '#D84444'
},
{
value: 'Non-Permanent', color: '#316DB5'
}]
};
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Add Title for Maps
You can add a title using titleSettings
property to the map to provide quick information to the user about the shapes rendered in the map.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { MapsModule } from '@syncfusion/ej2-angular-maps'
import { Component, OnInit } from '@angular/core';
import { world_map } from './world-map';
@Component({
imports: [
MapsModule
],
standalone: true,
selector: 'app-container',
template:
`<ejs-maps id='rn-container' [titleSettings] = 'titleSettings' >
<e-layers>
<e-layer [shapeData]= 'shapeData' [shapePropertyPath]= 'shapePropertyPath' [shapeDataPath]= 'shapeDataPath' [dataSource] = 'dataSource' [shapeSettings] = 'shapeSettings'></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent implements OnInit {
public titleSettings?: object;
public dataSource?: object[];
public shapeData?: object;
public shapePropertyPath?: string;
public shapeDataPath?: string;
public shapeSettings?: object;
ngOnInit(): void {
this.titleSettings = {
text: 'World map membership',
titleStyle: {
size: '16px'
}
}
this.dataSource = [{ "Country": "China", "Membership": "Permanent"},
{"Country": "France","Membership": "Permanent" },
{ "Country": "Russia","Membership": "Permanent"},
{"Country": "Kazakhstan","Membership": "Non-Permanent"},
{ "Country": "Poland","Membership": "Non-Permanent"},
{"Country": "Sweden","Membership": "Non-Permanent"}];
this.shapeData = world_map;
this.shapePropertyPath = 'name';
this.shapeDataPath = 'Country';
this.shapeSettings = {
colorValuePath: 'Membership',
colorMapping: [
{
value: 'Permanent', color: '#D84444'
},
{
value: 'Non-Permanent', color: '#316DB5'
}]
};
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Enable Legend
You can show legend for the maps by setting true to the visible
property in legendSettings
object and by injecting the LegendService
module using @NgModule.providers
method.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { MapsModule } from '@syncfusion/ej2-angular-maps'
import { LegendService } from '@syncfusion/ej2-angular-maps'
import { Component, OnInit } from '@angular/core';
import { world_map } from './world-map';
@Component({
imports: [
MapsModule
],
providers: [LegendService],
standalone: true,
selector: 'app-container',
template:
`<ejs-maps id='rn-container' [legendSettings] = 'legendSettings'>
<e-layers>
<e-layer [shapeData]= 'shapeData' [shapePropertyPath]= 'shapePropertyPath' [shapeDataPath]= 'shapeDataPath' [dataSource] = 'dataSource' [shapeSettings] = 'shapeSettings'></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent implements OnInit {
public dataSource?: object[];
public shapeData?: object;
public shapePropertyPath?: string;
public shapeDataPath?: string;
public shapeSettings?: object;
public legendSettings?: object;
ngOnInit(): void {
this.dataSource = [{ "Country": "China", "Membership": "Permanent"},
{"Country": "France","Membership": "Permanent" },
{ "Country": "Russia","Membership": "Permanent"},
{"Country": "Kazakhstan","Membership": "Non-Permanent"},
{ "Country": "Poland","Membership": "Non-Permanent"},
{"Country": "Sweden","Membership": "Non-Permanent"}];
this.shapeData = world_map;
this.shapePropertyPath = 'name';
this.shapeDataPath = 'Country';
this.shapeSettings = {
colorValuePath: 'Membership',
colorMapping: [
{
value: 'Permanent', color: '#D84444'
},
{
value: 'Non-Permanent', color: '#316DB5'
}]
};
this.legendSettings = {
visible: true
}
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Add Data Label
You can add data labels to show additional information of the shapes in map. This can be achieved by setting visible
property to true in the dataLabelSettings
object and by injecting DataLabelService
module using @NgModule.providers
method.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { MapsModule } from '@syncfusion/ej2-angular-maps'
import { DataLabelService } from '@syncfusion/ej2-angular-maps'
import { Component, OnInit } from '@angular/core';
import { world_map } from './world-map';
@Component({
imports: [
MapsModule
],
providers: [DataLabelService],
standalone: true,
selector: 'app-container',
template:
`<ejs-maps id='rn-container' >
<e-layers>
<e-layer [shapeData]= 'shapeData' [shapeSettings] = 'shapeSettings' [dataLabelSettings] = 'dataLabelSettings'></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent implements OnInit {
public shapeData?: object;
public shapeSettings?: object;
public dataLabelSettings?: object;
ngOnInit(): void {
this.shapeData = world_map;
this.shapeSettings = {
autofill: true
};
this.dataLabelSettings = {
visible: true,
labelPath: 'name',
smartLabelMode: 'Trim'
};
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Enable Tooltip
The tooltip is useful when you cannot display information by using the data labels due to space constraints.
You can enable tooltip by setting the visible
property as true in tooltipSettings
object and by injecting MapsTooltipService
module using @NgModule.providers
method.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { MapsModule } from '@syncfusion/ej2-angular-maps'
import { MapsTooltipService, DataLabelService } from '@syncfusion/ej2-angular-maps'
import { Component, OnInit } from '@angular/core';
import { world_map } from './world-map';
@Component({
imports: [
MapsModule
],
providers: [MapsTooltipService, DataLabelService],
standalone: true,
selector: 'app-container',
template: `<ejs-maps id='rn-container'>
<e-layers>
<e-layer [shapeData]= 'shapeData' [shapeSettings] = 'shapeSettings' [dataLabelSettings] = 'dataLabelSettings'[tooltipSettings] = 'tooltipSettings'></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent implements OnInit {
public shapeData?: object;
public shapeSettings?: object;
public tooltipSettings?: object;
public dataLabelSettings?: object;
ngOnInit(): void {
this.shapeData = world_map;
this.shapeSettings = {
autofill: true
};
this.dataLabelSettings = {
visible: true,
labelPath: 'name',
smartLabelMode: 'Trim'
};
this.tooltipSettings = {
visible: true,
valuePath: 'name'
};
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));