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Charts

Pareto Chart

In this demo, the DevExtreme Chart widget is used to create a Pareto chart. This example of a Pareto chart summarizes complaints about the service provided by a pizza shop. From this chart, the pizza shop owner may infer that to satisfy most of the customers, he or she needs to eliminate two most frequently encountered issues: delayed delivery and cold pizza.

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<template> <dx-chart id="chart" :data-source="dataSource" palette="Harmony Light" title="Pizza Shop Complaints" > <dx-argument-axis> <dx-label overlapping-behavior="stagger"/> </dx-argument-axis> <dx-value-axis :tick-interval="300" name="frequency" position="left" /> <dx-value-axis :tick-interval="20" :show-zero="true" :value-margins-enabled="false" name="percentage" position="right" > <dx-label :customize-text="customizePercentageText"/> <dx-constant-line :value="80" :width="2" color="#fc3535" dash-style="dash" > <dx-label :visible="false"/> </dx-constant-line> </dx-value-axis> <dx-series name="Complaint frequency" value-field="count" axis="frequency" type="bar" color="#fac29a" /> <dx-series name="Cumulative percentage" value-field="cumulativePercentage" axis="percentage" type="spline" color="#6b71c3" /> <dx-tooltip :enabled="true" :shared="true" :customize-tooltip="customizeTooltip" /> <dx-legend vertical-alignment="top" horizontal-alignment="center" /> <dx-common-series-settings argument-field="complaint"/> </dx-chart> </template> <script> import DxChart, { DxArgumentAxis, DxCommonSeriesSettings, DxLabel, DxLegend, DxSeries, DxTooltip, DxValueAxis, DxConstantLine } from 'devextreme-vue/chart'; import { complaintsData } from './data.js'; export default { components: { DxChart, DxArgumentAxis, DxCommonSeriesSettings, DxLabel, DxLegend, DxSeries, DxTooltip, DxValueAxis, DxConstantLine }, data: function() { return { customizeTooltip: function(info) { return { html: `<div><div class='tooltip-header'>${ info.argumentText }</div><div class='tooltip-body'><div class='series-name'>${ info.points[0].seriesName }: </div><div class='value-text'>${ info.points[0].valueText }</div><div class='series-name'>${ info.points[1].seriesName }: </div><div class='value-text'>${ info.points[1].valueText }% </div></div></div>` }; }, customizePercentageText: function(info) { return `${info.valueText}%`; } }; }, computed: { dataSource() { let data = complaintsData.sort(function(a, b) { return b.count - a.count; }), totalCount = data.reduce(function(prevValue, item) { return prevValue + item.count; }, 0), cumulativeCount = 0; return data.map(function(item) { cumulativeCount += item.count; return { complaint: item.complaint, count: item.count, cumulativePercentage: Math.round(cumulativeCount * 100 / totalCount) }; }); } } }; </script> <style> #chart { height: 440px; } .tooltip-header { margin-bottom: 5px; font-size: 16px; font-weight: 500; padding-bottom: 5px; border-bottom: 1px solid #c5c5c5; } .tooltip-body { width: 170px; } .tooltip-body .series-name { font-weight: normal; opacity: 0.6; display: inline-block; line-height: 1.5; padding-right: 10px; width: 126px; } .tooltip-body .value-text { display: inline-block; line-height: 1.5; width: 30px; } </style>
import Vue from 'vue'; import App from './App.vue'; new Vue({ el: '#app', components: { App }, template: '<App/>' });
<!DOCTYPE html> <html> <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/19.2.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.3/css/dx.light.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import('./index.js'); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"> <span v-if="false">Loading...</span> </div> </div> </body> </html>
export const complaintsData = [ { complaint: 'Cold pizza', count: 780 }, { complaint: 'Not enough cheese', count: 120 }, { complaint: 'Underbaked or Overbaked', count: 52 }, { complaint: 'Delayed delivery', count: 1123 }, { complaint: 'Damaged pizza', count: 321 }, { complaint: 'Incorrect billing', count: 89 }, { complaint: 'Wrong size delivered', count: 222 } ];
System.config({ transpiler: 'plugin-babel', paths: { 'npm:': 'https://unpkg.com/' }, map: { vue: 'npm:vue@2.6.3/dist/vue.esm.browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@latest/index.js', 'devextreme': 'npm:devextreme@19.2', 'devextreme-vue': 'npm:devextreme-vue@19.2', jszip: 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram', 'devexpress-gantt': 'npm:devexpress-gantt', 'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js' }, meta: { '*.vue': { loader: 'vue-loader' } }, packages: { 'devextreme-vue': { main: 'index.js' }, 'devextreme': { defaultExtension: 'js' } }, babelOptions: { sourceMaps: false, stage0: true } });