Discrete scale
Documentation
In this demo, a discrete scale is used to select a range within a set of categories.
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<div id="range-selector-demo">
<dx-range-selector
id="range-selector"
title="Copper Production in 2013"
[dataSource]="dataSource"
(onValueChanged)="onValueChanged($event)">
<dxo-size [height]="200"></dxo-size>
<dxo-chart>
<dxi-series valueField="copper" name="Copper"></dxi-series>
<dxo-common-series-settings
type="bar"
argumentField="country">
</dxo-common-series-settings>
</dxo-chart>
</dx-range-selector>
<h2>Total: <span>{{totalResult | number}}</span> tons</h2>
</div>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxRangeSelectorModule } from 'devextreme-angular';
import { Service, ProductionData } 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 {
dataSource: ProductionData[];
totalResult = 12809000;
constructor(service: Service) {
this.dataSource = service.getData();
}
onValueChanged(e) {
let data = this.dataSource,
total = 0,
startIndex,
endIndex;
data.forEach((item, index) => {
if (item.country == e.value[0]) {
startIndex = index;
}
else if (item.country == e.value[1]) {
endIndex = index;
}
});
if(endIndex) {
data
.slice(startIndex, endIndex + 1)
.forEach(function(item){
total += item.copper;
});
}
else {
total = data[startIndex].copper;
}
this.totalResult = total;
}
}
@NgModule({
imports: [
BrowserModule,
DxRangeSelectorModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #range-selector-demo {
height: 440px;
width: 100%;
text-align: center;
}
::ng-deep #range-selector {
margin-bottom: 20px;
}
import { Injectable } from '@angular/core';
export class ProductionData {
country: string;
copper: number;}
let data: ProductionData[] = [
{ country: "Chile", copper: 5700000 },
{ country: "United States", copper: 1220000 },
{ country: "Peru", copper: 1300000 },
{ country: "China", copper: 1650000 },
{ country: "Australia", copper: 990000 },
{ country: "Russia", copper: 930000 },
{ country: "DR Congo", copper: 900000 },
{ country: "Finland", copper: 119000 }
];
@Injectable()
export class Service {
getData(): ProductionData[] {
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',
'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': 'npm:devextreme@19.1',
'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>