Pareto (Angular)

Pareto charts, named after Vilfredo Pareto, contain both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line.

The left vertical axis may contain the frequency of occurrence, cost or any another important unit of measure. The right vertical axis is the cumulative percentage of the total number of occurrences, cost, or total of the particular unit of measure.

Pareto charts help identify the items that account for most of the occurrences so they can be prioritized.

Learn about FlexChart | FlexChart API Reference

This example uses Angular.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import { Component, Inject, enableProdMode, ViewChild, NgModule } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import { FormsModule } from '@angular/forms'; import { WjChartModule } from '@grapecity/wijmo.angular2.chart'; import { DataService, TDataItem } from './app.data'; import { isArray, CollectionView } from '@grapecity/wijmo'; import { Palettes } from '@grapecity/wijmo.chart'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { data: CollectionView; palette: any; // constructor(@Inject(DataService) private dataService: DataService) { this.data = dataService.getData(); this.palette = this._getRandomPalette(); } // updateData() { let view = this.data; // view.deferUpdate(() => { view.items.forEach((item: TDataItem) => { item.sales += (Math.random() - .5) * .5 * item.sales; }); }); } // private _getRandomPalette() { let palettes = Object.keys(Palettes).filter(prop => isArray(Palettes[prop])); let rand = Math.floor(Math.random() * palettes.length); // return Palettes[palettes[rand]]; } } // @NgModule({ imports: [FormsModule, WjChartModule, BrowserModule], declarations: [AppComponent], providers: [DataService], bootstrap: [AppComponent] }) export class AppModule { } // enableProdMode(); // Bootstrap application with hash style navigation and global services. platformBrowserDynamic().bootstrapModule(AppModule);
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexChart Pareto</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/dist/zone.min.js"></script> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.js"></script> <script src="systemjs.config.js"></script> <script> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html>
<div class="container-fluid"> <div class="form-group"> <button id="btnUpdate" class="btn btn-default" (click)="updateData()">Update</button> </div> <wj-flex-chart [itemsSource]="data" chartType="Column" binding="make" [palette]="palette"> <wj-flex-chart-axis wjProperty="axisY" format="n0" title="Sales (thousands)" [axisLine]="true"> </wj-flex-chart-axis> <wj-flex-chart-axis wjProperty="axisX" [labelAngle]="-90"></wj-flex-chart-axis> <wj-flex-chart-legend position="None"></wj-flex-chart-legend> <wj-flex-chart-series binding="sales" name="Sales (thousands)"></wj-flex-chart-series> <wj-flex-chart-series binding="cumSales" name="Cumulative Sales" chartType="Line" [style]="{'stroke':'orange', 'strokeWidth': 4}"> <wj-flex-chart-axis wjProperty="axisY" position="Right" title="Cumulative Sales" format="p0" [min]="0" [axisLine]="true"></wj-flex-chart-axis> </wj-flex-chart-series> </wj-flex-chart> </div>
import { Injectable } from '@angular/core'; import * as wijmo from '@grapecity/wijmo'; // export type TDataItem = { make: string; sales: number; cumSales?: number; } // @Injectable() export class DataService { getData() { // some raw data let data: TDataItem[] = [ { make: 'Vokswagen', sales: 2532435 }, { make: 'Toyota', sales: 2338453 }, { make: 'Renault-Nissan', sales: 2336543 }, { make: 'GM', sales: 2252543 }, { make: 'Hyundai-Kia', sales: 1553547 }, { make: 'Ford', sales: 1521153 }, { make: 'Suzuki', sales: 739123 }, { make: 'PSA', sales: 682121 }, { make: 'Daimler', sales: 440234 }, { make: 'BMW Group', sales: 586121 }, { make: 'Geely', sales: 410353 }, { make: 'Mazda', sales: 389243 }, { make: 'Chang\'an', sales: 389323 }, { make: 'Subaru', sales: 230221 }, { make: 'Tata Group', sales: 242123 } ]; // // created sorted view let view = new wijmo.CollectionView(data); view.sortDescriptions.push(new wijmo.SortDescription('sales', false)); // // add cumulative sales this._updateCumSales(view); // // update cumulative sales when the data changes view.collectionChanged.addHandler(() => this._updateCumSales(view)); // // done return view; } // // update cumulative sales private _updateCumSales(view: wijmo.CollectionView) { let totalSales = view.getAggregate(wijmo.Aggregate.Sum, 'sales'), cumSales = 0; // view.items.forEach((item) => { cumSales += item.sales; item.cumSales = cumSales / totalSales; }); } }
.wj-flexchart { margin: 0 auto; border: none; } body { margin-bottom: 24pt; }
(function (global) { System.config({ transpiler: 'ts', typescriptOptions: { tsconfig: true }, meta: { 'typescript': { "exports": "ts" }, '*.css': { loader: 'css' } }, paths: { // paths serve as alias 'npm:': 'node_modules/' }, // map tells the System loader where to look for things map: { 'core-js': 'npm:core-js/client/shim.min.js', 'zone': 'npm:zone.js/dist/zone.min.js', //'reflect-metadata': 'npm:reflect-metadata/Reflect.js', 'rxjs': 'npm:rxjs/bundles/rxjs.umd.min.js', //'rxjs': 'npm:rxjs', //'rxjs/operators': 'npm:rxjs/operators', '@angular/core': 'npm:@angular/core/bundles/core.umd.min.js', '@angular/common': 'npm:@angular/common/bundles/common.umd.min.js', '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.min.js', '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.min.js', '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.min.js', '@angular/http': 'npm:@angular/http/bundles/http.umd.min.js', '@angular/common/http': 'npm:@angular/common/bundles/common-http.umd.min.js', '@angular/router': 'npm:@angular/router/bundles/router.umd.min.js', '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.min.js', '@grapecity/wijmo': 'npm:@grapecity/wijmo/index.js', '@grapecity/wijmo.input': 'npm:@grapecity/wijmo.input/index.js', '@grapecity/wijmo.styles': 'npm:@grapecity/wijmo.styles', '@grapecity/wijmo.cultures': 'npm:@grapecity/wijmo.cultures', '@grapecity/wijmo.chart': 'npm:@grapecity/wijmo.chart/index.js', '@grapecity/wijmo.chart.analytics': 'npm:@grapecity/wijmo.chart.analytics/index.js', '@grapecity/wijmo.chart.animation': 'npm:@grapecity/wijmo.chart.animation/index.js', '@grapecity/wijmo.chart.annotation': 'npm:@grapecity/wijmo.chart.annotation/index.js', '@grapecity/wijmo.chart.finance': 'npm:@grapecity/wijmo.chart.finance/index.js', '@grapecity/wijmo.chart.finance.analytics': 'npm:@grapecity/wijmo.chart.finance.analytics/index.js', '@grapecity/wijmo.chart.hierarchical': 'npm:@grapecity/wijmo.chart.hierarchical/index.js', '@grapecity/wijmo.chart.interaction': 'npm:@grapecity/wijmo.chart.interaction/index.js', '@grapecity/wijmo.chart.radar': 'npm:@grapecity/wijmo.chart.radar/index.js', '@grapecity/wijmo.chart.render': 'npm:@grapecity/wijmo.chart.render/index.js', '@grapecity/wijmo.chart.webgl': 'npm:@grapecity/wijmo.chart.webgl/index.js', '@grapecity/wijmo.chart.map': 'npm:@grapecity/wijmo.chart.map/index.js', '@grapecity/wijmo.gauge': 'npm:@grapecity/wijmo.gauge/index.js', '@grapecity/wijmo.grid': 'npm:@grapecity/wijmo.grid/index.js', '@grapecity/wijmo.grid.detail': 'npm:@grapecity/wijmo.grid.detail/index.js', '@grapecity/wijmo.grid.filter': 'npm:@grapecity/wijmo.grid.filter/index.js', '@grapecity/wijmo.grid.search': 'npm:@grapecity/wijmo.grid.search/index.js', '@grapecity/wijmo.grid.grouppanel': 'npm:@grapecity/wijmo.grid.grouppanel/index.js', '@grapecity/wijmo.grid.multirow': 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extension packages: { src: { defaultExtension: 'ts' }, rxjs: { defaultExtension: 'js' }, // 'rxjs': {main: 'index.js', defaultExtension: 'js' }, // 'rxjs/ajax': {main: 'index.js', defaultExtension: 'js' }, //'rxjs/operators': {main: 'index.js', defaultExtension: 'js' }, // 'rxjs/testing': {main: 'index.js', defaultExtension: 'js' }, // 'rxjs/webSocket': {main: 'index.js', defaultExtension: 'js' }, "node_modules": { defaultExtension: 'js' }, wijmo: { defaultExtension: 'js', } } }); })(this);