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Charts

Error Bars

Documentation
If your data contains an error or measurement uncertainty, you can indicate a confidential interval on the Chart using error bars. To configure them, use the fields of the series’ valueErrorBar object. In this example, error bars indicate a range of average temperatures (on the upper pane) and humidity (on the lower pane) for a specific month.
www.weatherbase.com
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<dx-chart id="chart" defaultPane="bottom" [dataSource]="weatherData" title="Weather in Los Angeles, California"> <dxi-series pane="top" valueField="avgT" name="Average Temperature, °C"> <dxo-value-error-bar lowValueField="avgLowT" highValueField="avgHighT" [lineWidth]="1" [opacity]="0.8"> </dxo-value-error-bar> </dxi-series> <dxi-series pane="bottom" valueField="avgH" type="bar" name="Average Humidity, %"> <dxo-value-error-bar type="fixed" [value]="3" [lineWidth]="1"> </dxo-value-error-bar> </dxi-series> <dxo-common-series-settings argumentField="month"></dxo-common-series-settings> <dxi-pane name="top"></dxi-pane> <dxi-pane name="bottom"></dxi-pane> <dxo-argument-axis> <dxo-label displayMode="stagger"></dxo-label> </dxo-argument-axis> <dxo-export [enabled]="true"></dxo-export> <dxi-value-axis [min]="0" [max]="30" pane="top"> <dxo-grid [visible]="true"></dxo-grid> <dxo-title text="Temperature, °C"></dxo-title> </dxi-value-axis> <dxi-value-axis [min]="0" [tickInterval]="50" pane="bottom"> <dxo-grid [visible]="true"></dxo-grid> <dxo-title text="Humidity, %"></dxo-title> </dxi-value-axis> <dxo-tooltip [enabled]="true" [customizeTooltip]="customizeTooltip"></dxo-tooltip> <dxo-legend verticalAlignment="bottom" horizontalAlignment="center"> </dxo-legend> </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, Weather} 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 { weatherData: Weather[]; constructor(service: Service) { this.weatherData = service.getWeatherData(); } customizeTooltip(arg: any) { return { text: arg.seriesName + ": " + arg.value + " ( range: " + arg.lowErrorValue + " - " + arg.highErrorValue + ")" }; } } @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 Weather { month: string; avgT: number; avgLowT: number; avgHighT: number; avgH: number; } let weatherData: Weather[] = [{ month: "January", avgT: 14.1, avgLowT: 9.1, avgHighT: 19.1, avgH: 70 }, { month: "February", avgT: 14.7, avgLowT: 9.8, avgHighT: 19.6, avgH: 74 }, { month: "March", avgT: 15.6, avgLowT: 10.6, avgHighT: 20.4, avgH: 79 }, { month: "April", avgT: 16.8, avgLowT: 11.9, avgHighT: 21.7, avgH: 80 }, { month: "May", avgT: 18.2, avgLowT: 13.6, avgHighT: 22.7, avgH: 83 }, { month: "June", avgT: 20.2, avgLowT: 15.4, avgHighT: 25, avgH: 85 }, { month: "July", avgT: 22.6, avgLowT: 17.3, avgHighT: 27.9, avgH: 86 }, { month: "August", avgT: 23, avgLowT: 17.7, avgHighT: 28.4, avgH: 86 }, { month: "September", avgT: 22.3, avgLowT: 17, avgHighT: 27.7, avgH: 83 }, { month: "October", avgT: 20.1, avgLowT: 14.8, avgHighT: 25.3, avgH: 79 }, { month: "November", avgT: 17.2, avgLowT: 11.8, avgHighT: 22.7, avgH: 72 }, { month: "December", avgT: 14.6, avgLowT: 9.5, avgHighT: 19.7, avgH: 68 }]; @Injectable() export class Service { getWeatherData(): Weather[] { return weatherData; } }
// 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@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/17.1.7/css/dx.spa.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/17.1.7/css/dx.common.css" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/17.1.7/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>