Multiple Point Selection
Documentation
This demo illustrates the use of multi-point selection within the Chart widget.
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;
width: 100%;
}
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;
}
}
// 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://github.com/DevExpress/devextreme-angular/blob/master/README.md
System.config({
transpiler: 'ts',
typescriptOptions: {
module: "commonjs",
emitDecoratorMetadata: true,
experimentalDecorators: true
},
meta: {
'typescript': {
"exports": "ts"
}
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'ts': 'npm:plugin-typescript@7.0.6/lib/plugin.js',
'typescript': 'npm:typescript@2.2.2/lib/typescript.js',
'@angular/core': 'npm:@angular/core@7.1.3/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common@7.1.3/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler@7.1.3/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser@7.1.3/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@7.1.3/bundles/platform-browser-dynamic.umd.js',
'@angular/router': 'npm:@angular/router@7.1.3/bundles/router.umd.js',
'@angular/forms': 'npm:@angular/forms@7.1.3/bundles/forms.umd.js',
'@angular/common/http': 'npm:@angular/common@7.1.3/bundles/common-http.umd.js',
'tslib': 'npm:tslib/tslib.js',
'rxjs': 'npm:rxjs@6.3.3',
'rxjs/operators': 'npm:rxjs@6.3.3/operators',
'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.6/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram',
'devextreme': 'npm:devextreme@19.1',
'devextreme-angular': 'npm:devextreme-angular@19.1'
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts'
},
'devextreme': {
defaultExtension: 'js'
},
'rxjs': { main: 'index.js', defaultExtension: 'js' },
'rxjs/operators': { main: 'index.js', defaultExtension: 'js' },
'devextreme-angular': {
main: 'index.js',
defaultExtension: 'js'
}
}
});
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.3/css/dx.common.css" />
<link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/19.1.3/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.6.25/dist/zone.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<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>