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://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',
'devextreme': 'npm:devextreme@19.1',
'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-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/19.1.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.5/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@0.21.3/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>