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Bar Charts

Scale Breaks

Documentation

Scale breaks allow breaking off parts of the axis to improve the readability of a chart with high amplitude values. This example demonstrates auto-calculated scale breaks. You can change the number of breaks, their style or disabled them.

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<dx-chart id="chart" [title]="title" [dataSource]="data"> <dxi-series valueField="mass" argumentField="name" type="bar"> </dxi-series> <dxi-value-axis [visible]="true" [autoBreaksEnabled]="autoBreaksEnabledValue" [maxAutoBreakCount]="breaksCountValue"> <dxo-break-style [line]="lineStyleValue"> </dxo-break-style> </dxi-value-axis> <dxo-legend [visible]="false"> </dxo-legend> <dxo-tooltip [enabled]="true"> </dxo-tooltip> </dx-chart> <div class="options"> <div class="caption">Options</div> <div class="option"> <dx-check-box class="checkbox" text="Enable Breaks" [(value)]="autoBreaksEnabledValue"> </dx-check-box> </div> <div class="option center"> <span>Max Count</span> <dx-select-box [items]="breaksCount" [(value)]="breaksCountValue" [width]="60"> </dx-select-box> </div> <div class="option right"> <span>Style</span> <dx-select-box [items]="lineStyles" [(value)]="lineStyleValue" [width]="120"> </dx-select-box> </div> </div>
import { NgModule, Component, enableProdMode } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxChartModule, DxCheckBoxModule, DxSelectBoxModule } from 'devextreme-angular'; import { SolarSystemObject, Service } from './app.service'; if(!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'], providers: [Service], preserveWhitespaces: true }) export class AppComponent { data: SolarSystemObject[]; lineStyles: Array<string> = ["waved", "straight"]; breaksCount: Array<number> = [1, 2, 3, 4]; lineStyleValue: string; autoBreaksEnabledValue: boolean = true; breaksCountValue: number; title: string = "Relative Masses of the Heaviest\n Solar System Objects"; constructor(service: Service) { this.data = service.getData(); this.lineStyleValue = this.lineStyles[0]; this.breaksCountValue = this.breaksCount[2]; } } @NgModule({ imports: [ BrowserModule, DxChartModule, DxCheckBoxModule, DxSelectBoxModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #chart { height: 440px; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); margin-top: 20px; } .caption { font-size: 18px; font-weight: 500; } .option { display: inline-block; margin-right: 70px; margin-top: 5px; } .option > span { margin: 0 10px 0 0; } .checkbox{ margin-top: -4px; } .option > .dx-widget { display: inline-block; vertical-align: middle; }
import { Injectable } from '@angular/core'; export class SolarSystemObject { name: string; mass: number; } let data: SolarSystemObject[] = [{ name: "Jupiter", mass: 318 }, { name: "Saturn", mass: 95 }, { name: "Uranus", mass: 14.6 }, { name: "Neptune", mass: 17.2 }, { name: "Earth", mass: 1 }, { name: "Venus", mass: 0.82 }, { name: "Mars", mass: 0.11 }, { name: "Mercury", mass: 0.06 }]; @Injectable() export class Service { getData(): SolarSystemObject[] { return data; } }
// 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://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/ 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', 'devextreme': 'npm:devextreme@19.2', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram', 'devexpress-gantt': 'npm:devexpress-gantt', 'devextreme-angular': 'npm:devextreme-angular@19.2' }, 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/19.2.4/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/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>