In this section you can learn how to populate shape data for providing Data input to Map control and usage of DataSource property.
The Shape Data collection describing geographical shape information can be obtained from GEOJSON format shapes.
.\ Maps_GeoJSON\All Countries with States
You can assign the complete contents in “United States of America.json” file to new JSON object. For better
understanding, a TS file WorldMap.ts” is already created to store JSON data in JSON object “usMap”.
[WorldMap.ts]
export let usMap = //Paste all the content copied from the JSON file//The Maps control supports data binding with the dataSource property in the shape layers.
The following properties in shape layers is be used for binding data in Maps control,
* dataSource
* shapeDataPath
* shapePropertyPathThe dataSource property accepts the collection values as input. For example, you can provide the list of objects as input.
The shapeDataPath property is used to refer the data ID in DataSource. For example, population MapData
contains data ids ‘Name’ and ‘Population’. The shapeDataPath and the shapePropertyPath properties are
related to each other (refer to shapePropertyPath for more details).
The shapePropertyPath property is similar to the shapeDataPath that refers to the column name in the
data property of shape layers to identify the shape. When the values of the shapeDataPath property in the
dataSource property and the value of shapePropertyPath in the data property match, then the associated
object from the dataSource is bound to the corresponding shape.
The datasource is populated with JSON data relative to shape data and stored in JSON object. The WorldMap population as datasource is used for better understanding.
The “populationData.ts” file is used to store JSON data in JSON object “populationData”.
Refer both shape data and datasource as illustrated in the following code example.
[populationData.ts]
export let populationData: object[] = [
{
'code': 'AF',
'value': 53,
'name': 'Afghanistan',
'population': 29863010,
'density': 119
},
{
'code': 'AL',
'value': 117,
'name': 'Albania',
'population': 3195000,
'density': 111
},
{
'code': 'DZ',
'value': 15,
'name': 'Algeria',
'population': 34895000,
'density': 15
},
{
'code': 'AO',
'value': 15,
'name': 'Angola',
'population': 18498000,
'density': 15
},
{
'code': 'AR',
'value': 15,
'name': 'Argentina',
'population': 40091359,
'density': 14
},
{
'code': 'AM',
'value': 109,
'name': 'Armenia',
'population': 3230100,
'density': 108
}
];[app.component.ts]
import { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { Maps } from '@syncfusion/ej2-angular-maps';
import { world_map } from 'world-map.ts';
@Component({
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 {
ngOnInit(): void {
public dataSource: Object[] = [ {
'code': 'AF',
'value': 53,
'name': 'Afghanistan',
'population': 29863010,
'density': 119
},
{
'code': 'AL',
'value': 117,
'name': 'Albania',
'population': 3195000,
'density': 111
},
{
'code': 'DZ',
'value': 15,
'name': 'Algeria',
'population': 34895000,
'density': 15
},
{
'code': 'AO',
'value': 15,
'name': 'Angola',
'population': 18498000,
'density': 15
},
{
'code': 'AR',
'value': 15,
'name': 'Argentina',
'population': 40091359,
'density': 14
},
{
'code': 'AM',
'value': 109,
'name': 'Armenia',
'population': 3230100,
'density': 108
},]
public shapeData: Object = world_map;
public shapePropertyPath: String = 'name';
public shapeDataPath: String= 'name';
};
}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);