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Range Selector

Logarithmic Scale

Documentation
In this demo, a logarithmic axis is used to select a range within a set of rapidly-growing values.
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<div id="range-selector-demo"> <dx-chart id="zoomed-chart" [dataSource]="dataSource"> <dxi-series></dxi-series> <dxo-argument-axis [valueMarginsEnabled]="false" type="logarithmic" [minorTickCount]="10"> <dxo-label format="exponential"></dxo-label> <dxo-grid [visible]="true"></dxo-grid> <dxo-minor-grid [visible]="true"></dxo-minor-grid> </dxo-argument-axis> <dxi-value-axis [placeholderSize]="50"></dxi-value-axis> <dxo-legend [visible]="false"></dxo-legend> </dx-chart> <dx-range-selector id="range-selector" [dataSource]="dataSource" (onValueChanged)="onValueChanged($event)"> <dxo-size [height]="120"></dxo-size> <dxo-chart> <dxi-series></dxi-series> </dxo-chart> <dxo-scale type="logarithmic" [minorTickCount]="10" [minRange]="1"> <dxo-label format="exponential"></dxo-label> </dxo-scale> <dxo-slider-marker format="exponential"></dxo-slider-marker> <dxo-behavior callValueChanged="onMoving" [snapToTicks]="false"> </dxo-behavior> </dx-range-selector> </div>
import { NgModule, Component, ViewChild } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxRangeSelectorModule, DxChartModule, DxChartComponent } from 'devextreme-angular'; @Component({ selector: 'demo-app', templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'] }) export class AppComponent { @ViewChild(DxChartComponent) chart: DxChartComponent; dataSource: any[] = []; constructor() { let max = 100; for (let i = 0; i < max; i++) { this.dataSource.push({ arg: Math.pow(10, i * 0.1), val: Math.log(i + 1) / Math.log(0.5) + (Math.random() - 0.5) * (100 / (i + 1)) + 10 }); } } onValueChanged($event) { this.chart.instance.zoomArgument($event.value[0], $event.value[1]); } } @NgModule({ imports: [ BrowserModule, DxRangeSelectorModule, DxChartModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
/deep/ #range-selector-demo { height: 440px; width: 100%; } /deep/ #zoomed-chart{ height: 335px; margin: 0 0 15px; } /deep/ #range-selector { height: 80px; }
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular 2 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@4.0.10/lib/plugin.js', 'typescript': 'npm:typescript@2.0.6/lib/typescript.js', '@angular/core': 'npm:@angular/core@2.4.3/bundles/core.umd.js', '@angular/common': 'npm:@angular/common@2.4.3/bundles/common.umd.js', '@angular/compiler': 'npm:@angular/compiler@2.4.3/bundles/compiler.umd.js', '@angular/platform-browser': 'npm:@angular/platform-browser@2.4.3/bundles/platform-browser.umd.js', '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@2.4.3/bundles/platform-browser-dynamic.umd.js', '@angular/http': 'npm:@angular/http@2.4.3/bundles/http.umd.js', '@angular/router': 'npm:@angular/router@3.4.3/bundles/router.umd.js', '@angular/forms': 'npm:@angular/forms@2.4.3/bundles/forms.umd.js', 'rxjs': 'npm:rxjs@5.0.3', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'devextreme': 'npm:devextreme@16.2', 'jquery': 'npm:jquery@3.1.1/dist/jquery.min.js', 'devextreme-angular': 'npm:devextreme-angular@16.2' }, 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/16.2.6/css/dx.spa.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/16.2.6/css/dx.common.css" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/16.2.6/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>