Multiple Point Selection
Documentation
This demo illustrates the use of multi-point selection within the Chart component.
www.nytimes.com
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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) {
var 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;
}
let 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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