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Spline

Spline charts, like line charts, allow you to visualize data and display them as lines with points placed over specified intervals. However, spline charts smooth out individual lines that connect data points.

Backend API
<div id="chart-demo"> <dx-chart palette="violet" [dataSource]="architecturesInfo" title="Architecture Share Over Time (Count)" > <dxi-series valueField="smp" name="SMP"></dxi-series> <dxi-series valueField="mmp" name="MMP"></dxi-series> <dxi-series valueField="cnstl" name="Cnstl"></dxi-series> <dxi-series valueField="cluster" name="Cluster"></dxi-series> <dxo-common-series-settings #seriesSettings argumentField="year" [type]="types[0]" > </dxo-common-series-settings> <dxo-margin [bottom]="20"></dxo-margin> <dxo-common-axis-settings> <dxo-grid [visible]="true"></dxo-grid> </dxo-common-axis-settings> <dxo-legend verticalAlignment="top" horizontalAlignment="right"> </dxo-legend> <dxo-argument-axis [allowDecimals]="false" [axisDivisionFactor]="60"> <dxo-label> <dxo-format type="decimal"></dxo-format> </dxo-label> </dxo-argument-axis> <dxo-export [enabled]="true"></dxo-export> <dxo-tooltip [enabled]="true"></dxo-tooltip> </dx-chart> <div class="options"> <div class="caption">Options</div> <div class="option"> <span>Series Type</span> <dx-select-box [dataSource]="types" [(value)]="seriesSettings.type" [inputAttr]="{ 'aria-label': 'Series Type' }" > </dx-select-box> </div> </div> </div>
import { NgModule, Component, enableProdMode } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxChartModule, DxSelectBoxModule } from 'devextreme-angular'; import { ArchitectureInfo, 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 { types: string[] = ['spline', 'stackedspline', 'fullstackedspline']; architecturesInfo: ArchitectureInfo[]; constructor(service: Service) { this.architecturesInfo = service.getArchitecturesInfo(); } } @NgModule({ imports: [ BrowserModule, DxChartModule, DxSelectBoxModule, ], declarations: [AppComponent], bootstrap: [AppComponent], }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
.options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); margin-top: 20px; } .option { margin-top: 10px; } .caption { font-size: 18px; font-weight: 500; } .option > span { margin-right: 10px; } ::ng-deep .option > .dx-widget { display: inline-block; vertical-align: middle; }
import { Injectable } from '@angular/core'; export class ArchitectureInfo { year: number; smp: number; mmp: number; cnstl: number; cluster: number; } const architecturesInfo: ArchitectureInfo[] = [{ year: 1997, smp: 263, mmp: 208, cnstl: 9, cluster: 1, }, { year: 1999, smp: 169, mmp: 270, cnstl: 61, cluster: 7, }, { year: 2001, smp: 57, mmp: 261, cnstl: 157, cluster: 45, }, { year: 2003, smp: 0, mmp: 154, cnstl: 121, cluster: 211, }, { year: 2005, smp: 0, mmp: 97, cnstl: 39, cluster: 382, }, { year: 2007, smp: 0, mmp: 83, cnstl: 3, cluster: 437, }]; @Injectable() export class Service { getArchitecturesInfo(): ArchitectureInfo[] { return architecturesInfo; } }
// 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', ]; 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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>

In this example, you can use the drop-down menu under the chart to switch between the Spline, Stacked Spline, and Full-Stacked Spline chart types. A Stacked Spline chart visualizes multiple data series and allows you to compare the manner in which each series contributes to the total aggregate value for specific arguments. A Full-Stacked Spline chart helps compare the percentage value of multiple line series for each argument.

Configure Spline Charts

The functionality of Spline charts is very similar to that of line charts. You can use instructions from the Line demo description to configure Spline charts. To display a Spline, Stacked Spline, or Full-Stacked Spline series, set the type property to one of these types.