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Multiple Axes

You can display the Chart component with multiple axes for better data visualization. This demo illustrates a chart with two separate axes that display percentage and absolute values.

www.wikipedia.org
Backend API
<dx-chart id="chart" palette="vintage" [dataSource]="populationData" title="Evolution of Population by Continent" > <dxi-series valueField="africa" name="Africa"></dxi-series> <dxi-series valueField="asia" name="Asia"></dxi-series> <dxi-series valueField="europe" name="Europe"></dxi-series> <dxi-series valueField="latinamerica" name="Latin America & Caribbean" ></dxi-series> <dxi-series valueField="northamerica" name="Northern America"></dxi-series> <dxi-series valueField="oceania" name="Oceania"></dxi-series> <dxi-series axis="total" type="spline" valueField="total" name="Total" color="#008fd8" > </dxi-series> <dxo-common-series-settings argumentField="year" type="fullstackedbar"> </dxo-common-series-settings> <dxi-value-axis> <dxo-grid [visible]="true"></dxo-grid> </dxi-value-axis> <dxi-value-axis name="total" position="right"> <dxo-grid [visible]="true"></dxo-grid> <dxo-title text="Total Population, billions"></dxo-title> </dxi-value-axis> <dxo-legend verticalAlignment="bottom" horizontalAlignment="center"> </dxo-legend> <dxo-export [enabled]="true"></dxo-export> <dxo-tooltip [enabled]="true" [shared]="true" [customizeTooltip]="customizeTooltip" > <dxo-format type="largeNumber" [precision]="1"></dxo-format> </dxo-tooltip> </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, Population } 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 { populationData: Population[]; constructor(service: Service) { this.populationData = service.getPopulationData(); } customizeTooltip({ valueText, point, seriesName }) { const items = valueText.split('\n'); const color = point.getColor(); items.forEach((item, index) => { if (item.indexOf(seriesName) === 0) { const element = document.createElement('span'); element.textContent = item; element.style.color = color; element.className = 'active'; items[index] = element.outerHTML; } }); return { text: items.join('\n') }; } } @NgModule({ imports: [ BrowserModule, DxChartModule, ], declarations: [AppComponent], bootstrap: [AppComponent], }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #chart { height: 440px; } ::ng-deep .active { font-weight: 500; }
import { Injectable } from '@angular/core'; export class Population { year: string; africa: number; asia: number; europe: number; latinamerica: number; northamerica: number; oceania: number; total: number; } const populatinData: Population[] = [{ year: '1750', africa: 106000000, asia: 502000000, europe: 163000000, latinamerica: 16000000, northamerica: 2000000, oceania: 2000000, total: 791000000, }, { year: '1800', africa: 107000000, asia: 635000000, europe: 203000000, latinamerica: 24000000, northamerica: 7000000, oceania: 2000000, total: 978000000, }, { year: '1850', africa: 111000000, asia: 809000000, europe: 276000000, latinamerica: 38000000, northamerica: 26000000, oceania: 2000000, total: 1262000000, }, { year: '1900', africa: 133000000, asia: 947000000, europe: 408000000, latinamerica: 74000000, northamerica: 82000000, oceania: 6000000, total: 1650000000, }, { year: '1950', africa: 229895000, asia: 1403388000, europe: 547287000, latinamerica: 167368000, northamerica: 171614000, oceania: 12675000, total: 2532227000, }, { year: '2000', africa: 811101000, asia: 3719044000, europe: 726777000, latinamerica: 521419000, northamerica: 313289000, oceania: 31130000, total: 6122770000, }, { year: '2050', africa: 2191599000, asia: 5142220000, europe: 719257000, latinamerica: 750956000, northamerica: 446862000, oceania: 55223000, total: 9306128000, }]; @Injectable() export class Service { getPopulationData(): Population[] { return populatinData; } }
// 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/ const componentNames = [ 'accordion', 'action-sheet', 'autocomplete', 'bar-gauge', 'box', 'bullet', 'button-group', 'button', 'calendar', 'chart', 'check-box', 'circular-gauge', 'color-box', 'context-menu', 'data-grid', 'date-box', 'date-range-box', 'defer-rendering', 'diagram', 'draggable', 'drawer', 'drop-down-box', 'drop-down-button', 'file-manager', 'file-uploader', 'filter-builder', 'form', 'funnel', 'gallery', 'gantt', 'html-editor', 'linear-gauge', 'list', 'load-indicator', 'load-panel', 'lookup', 'map', 'menu', 'multi-view', 'nested', 'number-box', 'pie-chart', 'pivot-grid-field-chooser', 'pivot-grid', 'polar-chart', 'popover', 'popup', 'progress-bar', 'radio-group', 'range-selector', 'range-slider', 'recurrence-editor', 'resizable', 'responsive-box', 'sankey', 'scheduler', 'scroll-view', 'select-box', 'slider', 'sortable', 'sparkline', 'speed-dial-action', 'splitter', 'switch', 'tab-panel', 'tabs', 'tag-box', 'text-area', 'text-box', 'tile-view', 'toast', 'toolbar', 'tooltip', 'tree-list', 'tree-map', 'tree-view', 'validation-group', 'validation-summary', 'validator', 'vector-map', ]; window.exports = window.exports || {}; window.config = { transpiler: 'ts', typescriptOptions: { module: 'system', emitDecoratorMetadata: true, experimentalDecorators: true, }, meta: { 'typescript': { 'exports': 'ts', }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, '@angular/platform-browser-dynamic': { 'esModule': true, }, '@angular/platform-browser': { 'esModule': true, }, '@angular/core': { 'esModule': true, }, '@angular/common': { 'esModule': true, }, '@angular/common/http': { 'esModule': true, }, '@angular/animations': { 'esModule': true, }, '@angular/forms': { 'esModule': true, }, }, paths: { 'npm:': 'https://unpkg.com/', 'bundles:': '../../../../bundles/', }, map: { 'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js', 'typescript': 'npm:typescript@4.2.4/lib/typescript.js', /* @angular */ '@angular/compiler': 'bundles:@angular/compiler.umd.js', '@angular/platform-browser-dynamic': 'bundles:@angular/platform-browser-dynamic.umd.js', '@angular/core': 'bundles:@angular/core.umd.js', '@angular/core/primitives/signals': 'bundles:@angular/core.primitives.signals.umd.js', '@angular/common': 'bundles:@angular/common.umd.js', '@angular/common/http': 'bundles:@angular/common-http.umd.js', '@angular/platform-browser': 'bundles:@angular/platform-browser.umd.js', '@angular/platform-browser/animations': 'bundles:@angular/platform-browser.umd.js', '@angular/forms': 'bundles:@angular/forms.umd.js', /* devextreme */ 'devextreme': 'npm:devextreme@24.1.3/cjs', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13', 'devextreme/bundles/dx.all': 'npm:devextreme@24.1.3/bundles/dx.all.js', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.8', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.56', /* devextreme-angular umd maps */ 'devextreme-angular': 'bundles:devextreme-angular/devextreme-angular.umd.js', 'devextreme-angular/core': 'bundles:devextreme-angular/devextreme-angular-core.umd.js', ...componentNames.reduce((acc, name) => { acc[`devextreme-angular/ui/${name}`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}.umd.js`; return acc; }, {}), 'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js', 'tslib': 'npm:tslib@2.6.1/tslib.js', 'rxjs': 'npm:rxjs@7.5.3/dist/bundles/rxjs.umd.js', 'rxjs/operators': 'npm:rxjs@7.5.3/dist/cjs/operators/index.js', 'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js', // Prettier 'prettier/standalone': 'npm:prettier@2.8.8/standalone.js', 'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js', }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts', }, 'devextreme': { defaultExtension: 'js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, 'rxjs': { defaultExtension: 'js', }, 'rxjs/operators': { defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:@devextreme/runtime@3.0.13/inferno/package.json', 'npm:rxjs@7.5.3/package.json', 'npm:rxjs@7.5.3/operators/package.json', 'npm:devexpress-diagram@2.2.8/package.json', 'npm:devexpress-gantt@4.1.56/package.json', ], }; System.config(window.config); // System.import('@angular/compiler').catch(console.error.bind(console));
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" lang="en"> <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=5.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.3/css/dx.light.css" /> <script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script> <script src="https://unpkg.com/zone.js@0.13.0/dist/zone.js"></script> <script src="https://unpkg.com/reflect-metadata@0.1.13/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>

To configure a multi-axis chart, follow the steps below:

  1. Create and name value axes. Declare multiple objects in the valueAxis array. Each object configures a value axis. Every value axis should have a unique name.

  2. Bind series to value axes.
    Assign the name of an axis to the series.axis property. If leave the series.axis property unspecified, the series is bound to the axis declared first in the valueAxis array.

In this demo, the first axis is declared without a name and is bound to the first series. The name of the second axis is total and it is bound to the spline series. The position of the second axis is right.