Populate Data in Angular Maps component

20 Apr 2021 / 5 minutes to read

In this section you can learn how to populate shape data for providing Data input to Map control and usage of DataSource property.

Shape Data

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//

Data Binding

The Maps control supports data binding with the dataSource property in the shape layers.

Properties

The following properties in shape layers is be used for binding data in Maps control,

* dataSource
* shapeDataPath
* shapePropertyPath

Data Source

The dataSource property accepts the collection values as input. For example, you can provide the list of objects as input.

Shape Data Path

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).

Shape Property Path

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]

Source

Preview

app.component.ts

app.module.ts

main.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);

Binding complex data source

You can bind the data field from data source to the maps in two different ways.

Bind the field name directly to the properties as shapeDataPath, colorValuePath, valuePath and shapeValuePath.
Bind the field name as data.field to the properties as shapeDataPath, colorValuePath, valuePath and shapeValuePath.

The complex data source binding can be done as illustrated in the following code example.

Source

Preview

app.component.ts

app.module.ts

main.ts

import { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { Maps , Marker, Bubble, MapsTooltip } from '@syncfusion/ej2-angular-maps';
import { world_map } from 'world-map.ts';
Maps.Inject(Marker, Bubble, MapsTooltip);
@Component({
selector: 'app-container',
template:
`<ejs-maps id='rn-container' >
<e-layers>
<e-layer  [shapeData]= 'shapeData'  [shapePropertyPath]= 'shapePropertyPath' [shapeDataPath]= 'shapeDataPath'
	[shapeSettings]='shapeSettings' [dataSource] = 'dataSource' [tooltipSettings]='tooltipSettings'
	[bubbleSettings]='bubbleSettings' [markerSettings]='markerSettings'></e-layer>
</e-layers>
</ejs-maps>`
})
export class AppComponent implements OnInit {
ngOnInit(): void {
    public dataSource: Object[] = [
			{ "Continent": "North America", 'color': '#71B081',
        data: { "continent": "North America", 'color': '#71B081' }
        },
        { "Continent": "South America", 'color': '#5A9A77',
        data: { "continent": "South America", 'color': '#5A9A77' }
        },
        { "Continent": "Africa", 'color': '#498770',
        data: { "continent": "Africa", 'color': '#498770' }
        },
        { "Continent": "Europe", 'color': '#39776C',
        data: { "continent": "Europe", 'color': '#39776C' }
        },
        { "Continent": "Asia", 'color': '#266665',
        data: { "continent": "Asia", 'color': '#266665' }
        },
        { "Continent": "Australia", 'color': '#124F5E',
        data: { "continent": "Australia", 'color': '#124F5E' }
        }
		]
        public shapeData: Object = world_map;
public shapePropertyPath: String = 'continent';
public shapeDataPath: String= 'data.continent';
	public shapeSettings: Object = {
	   colorValuePath : 'data.color'
	};
	public tooltipSettings: Object = {
	    visible: true,
        valuePath: 'data.continent'
	};
	public bubbleSettings: Object[] =  [
        {
            visible: true,
            valuePath: 'data.value',
            colorValuePath: 'data.color',
            animationDuration: 0,
            minRadius: 20,
            maxRadius: 90,
            opacity: 0.8,
            dataSource: [
                { 'name': 'India', 'value': 18.89685398845257, 'population': 391292635,
                data: { 'color': 'red', 'population': 391292635, 'value': 189685398845257 }
                }
            ],
            tooltipSettings: {
                visible: true,
                valuePath: 'data.population',
                template:"<div>${data.population}</div>"
            },
        },
    ];
	public markerSettings: Object[] = [
        {
            visible: true,
            dataSource: [
                { latitude: 37.6276571, longitude: -122.4276688, name: 'San Bruno',
                data: { x: 37.6276571, y: -122.4276688, name: 'San Bruno', shape: 'Pentagon',
                color: 'red', imageUrl: 'images/ballon.png' }
                },
                { latitude: 33.5302186, longitude: -117.7418381, name: 'Laguna Niguel',
                data: { x: 33.5302186, y: -117.7418381, name: 'Laguna Niguel', color: 'blue',
                shape: 'Pentagon', imageUrl: 'images/ballon.png' }
                }
            ],
            shapeValuePath: "data.shape",
            colorValuePath: "data.color",
            height: 20,
            width: 20,
            offset: {
                y: -10,
                x: 0
            },
            longitudeValuePath: "data.y",
            latitudeValuePath: "data.x",
            tooltipSettings: {
                visible: true,
                valuePath: 'data.name',
                format: "${data.name}: ${data.x} : ${data.y}"
            },
            animationDuration: 0
            },
        ]
    };
}

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);

Contents

Shape Data
Data Binding
Properties
Data Source
Shape Data Path
Shape Property Path
Binding complex data source

Contents

Shape Data
Data Binding
Properties
Data Source
Shape Data Path
Shape Property Path
Binding complex data source

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