Logarithmic Scale
Documentation
In this demo, a logarithmic axis is used to select a range within a set of rapidly-growing values.
Feel free to share demo-related thoughts here.
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If you have technical questions, please create a support ticket in the DevExpress Support Center.
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<div>
<dx-chart
id="zoomed-chart"
[dataSource]="dataSource"
[resizePanesOnZoom]="true">
<dxi-series></dxi-series>
<dxo-argument-axis
[valueMarginsEnabled]="false"
[visualRange]="visualRange"
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>
<dxo-legend [visible]="false"></dxo-legend>
</dx-chart>
<dx-range-selector
id="range-selector"
[dataSource]="dataSource"
[(value)]="visualRange">
<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, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxRangeSelectorModule, DxChartModule } from 'devextreme-angular';
if(!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css']
})
export class AppComponent {
dataSource: any[] = [];
visualRange: 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
});
}
}
}
@NgModule({
imports: [
BrowserModule,
DxRangeSelectorModule,
DxChartModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #zoomed-chart{
height: 335px;
margin: 0 0 15px;
}
::ng-deep #range-selector {
height: 120px;
}
// 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: "system",
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': 'npm:@angular',
'tslib': 'npm:tslib/tslib.js',
'rxjs': 'npm:rxjs',
'devextreme': 'npm:devextreme@20.1',
'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.7/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram@1.0.14',
'devexpress-gantt': 'npm:devexpress-gantt@1.0.7',
'devextreme-angular': 'npm:devextreme-angular@20.1'
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts'
},
'devextreme': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
},
packageConfigPaths: [
"npm:*/package.json",
"npm:@angular/*/package.json",
"npm:@angular/common/*/package.json",
"npm:rxjs/operators/package.json",
"npm:devextreme-angular@20.1/*/package.json",
"npm:devextreme-angular@20.1/ui/*/package.json",
]
});
<!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/20.1.7/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.7/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@0.10.2/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>