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Line Charts

Crosshair

Documentation
In this example, the crosshair pointer is enabled and a custom style is applied to it. The crosshair pointer allows a user to determine the argument and the value of a specific point more precisely.
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<dx-chart id="chart" [dataSource]="countriesInfo"> <dxi-series *ngFor="let energy of energySources" [valueField]="energy.value" [name]="energy.name"> </dxi-series> <dxo-common-series-settings argumentField="country" type="spline"> <dxo-point hoverMode="allArgumentPoints"></dxo-point> </dxo-common-series-settings> <dxo-argument-axis [valueMarginsEnabled]="false" discreteAxisDivisionMode="crossLabels"> <dxo-grid [visible]="true"></dxo-grid> </dxo-argument-axis> <dxo-crosshair [enabled]="true" color="#949494" [width]="3" dashStyle="dot"> <dxo-label [visible]="true" backgroundColor="#949494"> <dxo-font color="#fff" [size]="12"> </dxo-font> </dxo-label> </dxo-crosshair> <dxo-legend verticalAlignment="bottom" horizontalAlignment="center" itemTextPosition="bottom"> </dxo-legend> <dxo-title text="Energy Consumption in 2004"> <dxo-subtitle text="(Millions of Tons, Oil Equivalent)"></dxo-subtitle> </dxo-title> <dxo-tooltip [enabled]="true" [customizeTooltip]="customizeTooltip"> </dxo-tooltip> <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, CountryInfo, EnergyDescription } 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 { countriesInfo: CountryInfo[]; energySources: EnergyDescription[]; constructor(service: Service) { this.countriesInfo = service.getCountriesInfo(); this.energySources = service.getEnergySources(); } customizeTooltip(arg: any) { return arg.valueText; } } @NgModule({ imports: [ BrowserModule, DxChartModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
/deep/ #chart { height: 440px; width: 100%; }
import { Injectable } from '@angular/core'; export class CountryInfo { country: string; hydro: number; oil: number; gas: number; coal: number; nuclear: number; } export class EnergyDescription { value: string; name: string; } let energySources: EnergyDescription[] = [ { value: "hydro", name: "Hydro-electric" }, { value: "oil", name: "Oil" }, { value: "gas", name: "Natural gas" }, { value: "coal", name: "Coal" }, { value: "nuclear", name: "Nuclear" } ]; let countriesInfo: CountryInfo[] = [{ country: "USA", hydro: 59.8, oil: 937.6, gas: 582, coal: 564.3, nuclear: 187.9 }, { country: "China", hydro: 74.2, oil: 308.6, gas: 35.1, coal: 956.9, nuclear: 11.3 }, { country: "Russia", hydro: 40, oil: 128.5, gas: 361.8, coal: 105, nuclear: 32.4 }, { country: "Japan", hydro: 22.6, oil: 241.5, gas: 64.9, coal: 120.8, nuclear: 64.8 }, { country: "India", hydro: 19, oil: 119.3, gas: 28.9, coal: 204.8, nuclear: 3.8 }, { country: "Germany", hydro: 6.1, oil: 123.6, gas: 77.3, coal: 85.7, nuclear: 37.8 }]; @Injectable() export class Service { getCountriesInfo(): CountryInfo[] { return countriesInfo; } getEnergySources(): EnergyDescription[] { return energySources; } }
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular 2 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@4.1.0/bundles/core.umd.js', '@angular/common': 'npm:@angular/common@4.1.0/bundles/common.umd.js', '@angular/compiler': 'npm:@angular/compiler@4.1.0/bundles/compiler.umd.js', '@angular/platform-browser': 'npm:@angular/platform-browser@4.1.0/bundles/platform-browser.umd.js', '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@4.1.0/bundles/platform-browser-dynamic.umd.js', '@angular/http': 'npm:@angular/http@4.1.0/bundles/http.umd.js', '@angular/router': 'npm:@angular/router@4.1.0/bundles/router.umd.js', '@angular/forms': 'npm:@angular/forms@4.1.0/bundles/forms.umd.js', 'rxjs': 'npm:rxjs@5.3.1', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'devextreme': 'npm:devextreme@17.1', 'jquery': 'npm:jquery@3.1.1/dist/jquery.min.js', 'devextreme-angular': 'npm:devextreme-angular@17.1' }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts' }, 'devextreme': { 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/17.1.5/css/dx.spa.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/17.1.5/css/dx.common.css" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/17.1.5/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@0.19.31/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>