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) {
const data = this.dataSource;
let total = 0;
let startIndex;
let 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((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;
}
const 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 = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
},
meta: {
'typescript': {
'exports': 'ts',
},
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'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
},
map: {
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'typescript': 'npm:typescript@3.5.3/lib/typescript.js',
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'tslib': 'npm:tslib@2.3.1/tslib.js',
'rxjs': 'npm:rxjs@6.4.0',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js',
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'jszip': 'npm:jszip@3.7.1/dist/jszip.min.js',
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'@devextreme/vdom': 'npm:@devextreme/vdom@2.2.3',
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'inferno': 'npm:inferno@7.4.10/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat@7.4.10/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.10/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom@1.0.7/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate@7.4.10/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode@7.4.10/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class@7.4.10/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras@7.4.10/dist/inferno-extras.min.js',
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts',
},
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defaultExtension: 'js',
},
'@devextreme/vdom': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@2.3.8/inferno/package.json',
'npm:@angular/*/package.json',
'npm:@angular/common/*/package.json',
'npm:rxjs@6.4.0/package.json',
'npm:rxjs@6.4.0/operators/package.json',
'npm:devextreme-angular/*/package.json',
'npm:devextreme-angular@21.2.3/ui/*/package.json',
'npm:devextreme-angular@21.2.3/package.json',
'npm:devexpress-diagram@2.1.37/package.json',
'npm:devexpress-gantt@3.1.24/package.json',
],
};
System.config(window.config);
<!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/21.2.3/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.3/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@0.11.4/dist/zone.js"></script>
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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>