Discrete scale
Documentation
In this demo, a discrete scale is used to select a range within a set of categories.
Feel free to share demo-related thoughts here.
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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-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 {
text-align: center;
}
::ng-deep #range-selector {
margin-bottom: 20px;
height: 200px;
}
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://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
window.config = {
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typescriptOptions: {
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meta: {
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},
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paths: {
'npm:': 'https://unpkg.com/'
},
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'typescript': 'npm:typescript@3.5.3/lib/typescript.js',
'@angular': 'npm:@angular',
'tslib': 'npm:tslib@2.3.0/tslib.js',
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'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
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defaultExtension: 'ts'
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defaultExtension: 'js'
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main: 'index'
},
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main: 'index'
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'es6-object-assign': {
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},
packageConfigPaths: [
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"npm:devextreme-angular/package.json",
"npm:devexpress-diagram/package.json",
"npm:devexpress-gantt/package.json",
]
};
System.config(window.config);
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
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<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>