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);
::ng-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 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@8.0.0/lib/plugin.js',
'typescript': 'npm:typescript@3.4.5/lib/typescript.js',
'@angular/core': 'npm:@angular/core@8.0.0/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common@8.0.0/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler@8.0.0/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser@8.0.0/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@8.0.0/bundles/platform-browser-dynamic.umd.js',
'@angular/router': 'npm:@angular/router@8.0.0/bundles/router.umd.js',
'@angular/forms': 'npm:@angular/forms@8.0.0/bundles/forms.umd.js',
'@angular/common/http': 'npm:@angular/common@8.0.0/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/19.1.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.6/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>