Doughnut
Documentation
This demo illustrates the PieChart component with the doughnut series type, which is often used when comparing the percentage values of different point arguments within a series.
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<dx-pie-chart
id="pie"
type="doughnut"
title="The Population of Continents and Regions"
palette="Soft Pastel"
[dataSource]="populationByRegions">
<dxi-series
argumentField="region">
<dxo-label
[visible]="true"
format="millions">
<dxo-connector [visible]="true"></dxo-connector>
</dxo-label>
</dxi-series>
<dxo-export [enabled]="true"></dxo-export>
<dxo-legend
[margin]="0"
horizontalAlignment="right"
verticalAlignment="top"></dxo-legend>
<dxo-tooltip
[enabled]="true"
[customizeTooltip]="customizeTooltip"
format="millions">
</dxo-tooltip>
</dx-pie-chart>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxPieChartModule } from 'devextreme-angular';
import { PopulationByRegion, Service } from './app.service';
import { PercentPipe } from '@angular/common';
if(!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css'],
providers: [Service]
})
export class AppComponent {
pipe: any = new PercentPipe("en-US");
populationByRegions: PopulationByRegion[];
constructor(service: Service) {
this.populationByRegions = service.getPopulationByRegions();
}
customizeTooltip = (arg: any) => {
return {
text: arg.valueText + " - " + this.pipe.transform(arg.percent, "1.2-2")
};
}
}
@NgModule({
imports: [
BrowserModule,
DxPieChartModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #pie {
height: 440px;
}
import {
Injectable
} from '@angular/core';
export class PopulationByRegion {
region: string;
val: number;
}
let populationByRegions: PopulationByRegion[] = [{
region: "Asia",
val: 4119626293
}, {
region: "Africa",
val: 1012956064
}, {
region: "Northern America",
val: 344124520
}, {
region: "Latin America and the Caribbean",
val: 590946440
}, {
region: "Europe",
val: 727082222
}, {
region: "Oceania",
val: 35104756
}];
@Injectable()
export class Service {
getPopulationByRegions(): PopulationByRegion[] {
return populationByRegions;
}
}
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
window.config = {
transpiler: 'ts',
typescriptOptions: {
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emitDecoratorMetadata: true,
experimentalDecorators: true
},
meta: {
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"exports": "ts"
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}
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paths: {
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},
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'typescript': 'npm:typescript@3.5.3/lib/typescript.js',
'@angular': 'npm:@angular',
'tslib': 'npm:tslib@2.3.0/tslib.js',
'rxjs': 'npm:rxjs@6.4.0',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.27.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@21.1.4/cjs',
'devextreme/bundles/dx.all': 'npm:devextreme@21.1.4/bundles/dx.all.js',
'jszip': 'npm:jszip@3.6.0/dist/jszip.min.js',
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defaultExtension: 'ts'
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defaultExtension: 'js'
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main: 'index'
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"npm:devextreme-angular/package.json",
"npm:devexpress-diagram/package.json",
"npm:devexpress-gantt/package.json",
]
};
System.config(window.config);
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>DevExtreme Demo</title>
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<script>
System.import('app').catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>