Multiple Point Selection
Documentation
This demo illustrates the use of multi-point selection within the Chart component.
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<dx-chart
id="chart"
[dataSource]="medalsInfo"
pointSelectionMode="multiple"
[rotated]="true"
title="Olympic Medals in 2008"
(onPointClick)="pointClick($event)"
>
<dxi-series valueField="gold" name="Gold Medals" color="#ffd700"></dxi-series>
<dxi-series
valueField="silver"
name="Silver Medals"
color="#c0c0c0"
></dxi-series>
<dxi-series
valueField="bronze"
name="Bronze Medals"
color="#cd7f32"
></dxi-series>
<dxo-common-series-settings argumentField="country" type="stackedbar">
<dxo-selection-style>
<dxo-hatching direction="left"></dxo-hatching>
</dxo-selection-style>
</dxo-common-series-settings>
<dxo-legend verticalAlignment="bottom" horizontalAlignment="center">
</dxo-legend>
<dxo-export [enabled]="true"></dxo-export>
</dx-chart>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxChartModule } from 'devextreme-angular';
import { Service, MedalsInfo } from './app.service';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
providers: [Service],
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css'],
})
export class AppComponent {
medalsInfo: MedalsInfo[];
constructor(service: Service) {
this.medalsInfo = service.getMedalsInfo();
}
pointClick(e: any) {
const point = e.target;
if (point.isSelected()) {
point.clearSelection();
} else {
point.select();
}
}
}
@NgModule({
imports: [
BrowserModule,
DxChartModule,
],
declarations: [AppComponent],
bootstrap: [AppComponent],
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #chart {
height: 440px;
}
import { Injectable } from '@angular/core';
export class MedalsInfo {
country: string;
gold: number;
silver: number;
bronze: number;
}
const medalsInfo: MedalsInfo[] = [{
country: 'USA',
gold: 36,
silver: 38,
bronze: 36,
}, {
country: 'China',
gold: 51,
silver: 21,
bronze: 28,
}, {
country: 'Russia',
gold: 23,
silver: 21,
bronze: 28,
}, {
country: 'Britain',
gold: 19,
silver: 13,
bronze: 15,
}, {
country: 'Australia',
gold: 14,
silver: 15,
bronze: 17,
}, {
country: 'Germany',
gold: 16,
silver: 10,
bronze: 15,
}];
@Injectable()
export class Service {
getMedalsInfo(): MedalsInfo[] {
return medalsInfo;
}
}
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],
};
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