Discrete Data
Documentation
This example demonstrates how to visualize discrete data using the PolarChart component. Months in the data source form discrete categories that divide the PolarChart. In addition, you can spot the difference between series types. Use the drop-down menu below the PolarChart to change the applied series type.
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<div class="long-title">
<h3>Average temperature in London</h3>
</div>
<div id="chart-demo">
<dx-polar-chart
id="radarChart"
[dataSource]="temperaturesData">
<dxi-series valueField="day" name="Day" color="#ba4d51"></dxi-series>
<dxi-series valueField="night" name="Night" color="#5f8b95"></dxi-series>
<dxo-common-series-settings
#seriesSettings
type="scatter">
</dxo-common-series-settings>
<dxo-margin
[top]="50"
[bottom]="50"
[left]="100">
</dxo-margin>
</dx-polar-chart>
<div class="center">
<div>Series Type</div>
<dx-select-box
[dataSource]="types"
[(value)]="seriesSettings.type"
[width]="200">
</dx-select-box>
</div>
</div>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxPolarChartModule, DxSelectBoxModule } from 'devextreme-angular';
import { Temperature, Service } from './app.service';
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 {
temperaturesData: Temperature[];
types = ["scatter", "line", "area", "bar", "stackedbar"];
constructor(service: Service) {
this.temperaturesData = service.getTemperaturesData();
}
}
@NgModule({
imports: [
BrowserModule,
DxPolarChartModule,
DxSelectBoxModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #chart-demo {
height: 600px;
}
::ng-deep #radarChart {
height: 500px;
}
::ng-deep #chart-demo > .center {
text-align: center;
}
::ng-deep #chart-demo > .center > div,
::ng-deep #chart-demo > .center > .dx-widget {
display: inline-block;
vertical-align: middle;
}
::ng-deep .long-title h3 {
font-family: 'Segoe UI Light', 'Helvetica Neue Light', 'Segoe UI', 'Helvetica Neue', 'Trebuchet MS', Verdana;
font-weight: 200;
font-size: 28px;
text-align: center;
margin-bottom: 20px;
}
import { Injectable } from '@angular/core';
export class Temperature {
arg: string;
day: number;
night: number;
}
let temperaturesData: Temperature[] = [{
arg: "January",
day: 6,
night: 2
}, {
arg: "February",
day: 7,
night: 2
}, {
arg: "March",
day: 10,
night: 3
}, {
arg: "April",
day: 14,
night: 5
}, {
arg: "May",
day: 18,
night: 8
}, {
arg: "June",
day: 21,
night: 11
}, {
arg: "July",
day: 22,
night: 13
}, {
arg: "August",
day: 22,
night: 13
}, {
arg: "September",
day: 19,
night: 11
}, {
arg: "October",
day: 15,
night: 8
}, {
arg: "November",
day: 10,
night: 5
}, {
arg: "December",
day: 7,
night: 3
}];
@Injectable()
export class Service {
getTemperaturesData(): Temperature[] {
return temperaturesData;
}
}
// 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/
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]
};
System.config(window.config);
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<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));
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<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>