Angular PieChart - OData Service

To bind the PieChart to data provided by an OData service, use the ODataStore.

app.component.html
app.component.ts
app.module.ts
  • <dx-pie-chart [dataSource]="pieChartDataSource">
  • <!-- ... -->
  • </dx-pie-chart>
  • import { Component } from '@angular/core';
  • import 'devextreme/data/odata/store';
  • import DataSource from 'devextreme/data/data_source';
  •  
  • @Component({
  • selector: 'app-root',
  • templateUrl: './app.component.html',
  • styleUrls: ['./app.component.css']
  • })
  • export class AppComponent {
  • pieChartDataSource = new DataSource({
  • store: {
  • type: 'odata',
  • url: 'https://www.example.com/dataservices/odata/targetData',
  • key: 'Id'
  • },
  • paginate: false
  • });
  • }
  • import { BrowserModule } from '@angular/platform-browser';
  • import { NgModule } from '@angular/core';
  • import { AppComponent } from './app.component';
  •  
  • import { DxPieChartModule } from 'devextreme-angular';
  •  
  • @NgModule({
  • declarations: [
  • AppComponent
  • ],
  • imports: [
  • BrowserModule,
  • DxPieChartModule
  • ],
  • providers: [ ],
  • bootstrap: [AppComponent]
  • })
  • export class AppModule { }

As you may notice, in the previous code, the ODataStore is not declared explicilty. Instead, it is wrapped in the DataSource instance. That is because the PieChart requires pagination to be off in order to prevent data from partitioning. Other than that, the DataSource provides wide data-processing capabilities. For example, it can filter data.

app.component.html
app.component.ts
app.module.ts
  • <dx-pie-chart [dataSource]="pieChartDataSource">
  • <!-- ... -->
  • </dx-pie-chart>
  • import { Component } from '@angular/core';
  • import 'devextreme/data/odata/store';
  • import DataSource from 'devextreme/data/data_source';
  •  
  • @Component({
  • selector: 'app-root',
  • templateUrl: './app.component.html',
  • styleUrls: ['./app.component.css']
  • })
  • export class AppComponent {
  • pieChartDataSource = new DataSource({
  • store: {
  • type: 'odata',
  • url: 'https://www.example.com/dataservices/odata/targetData',
  • key: 'Id'
  • },
  • paginate: false,
  • // Take summer months only
  • filter: [
  • ['Id', '>=', 6],
  • ['Id', '<=', 8]
  • ]
  • });
  • }
  • import { BrowserModule } from '@angular/platform-browser';
  • import { NgModule } from '@angular/core';
  • import { AppComponent } from './app.component';
  •  
  • import { DxPieChartModule } from 'devextreme-angular';
  •  
  • @NgModule({
  • declarations: [
  • AppComponent
  • ],
  • imports: [
  • BrowserModule,
  • DxPieChartModule
  • ],
  • providers: [ ],
  • bootstrap: [AppComponent]
  • })
  • export class AppModule { }
See Also