チャート:箱ひげ図

箱ひげ図(box plot) は、四分位数による数値データのグループを示します。箱から垂直に伸びる線(ひげ)は、上下の四分位数の外側の変動を示します。このサンプルでは、boxPlotData プロパティを使用して、事前に計算された統計データを系列に連結する方法を示します。

このサンプルでは、showInnerPointsshowOutliersshowMeanLineshowMeanMarkerrotated プロパティを使用して、箱ひげ図系列の外観をカスタマイズする方法も示します。

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; // import { CollectionView, SortDescription, isArray } from '@mescius/wijmo'; import { FlexChart, Palettes } from '@mescius/wijmo.chart'; import { BoxWhisker } from '@mescius/wijmo.chart.analytics'; import { createBoxPlotData, getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { let data = getData(); let view = getView(data); let salesSeries = new BoxWhisker({ name: '売上', binding: 'sales', groupWidth: 0.7, gapWidth: 0.2, // boxPlotDataを使用すると、BoxWhiskerは生の配列から統計量を再計算する代わりに、事前に処理された統計量を利用できるようになります。 boxPlotData: data.map(item => item.salesBoxPlotData) }); let expensesSeries = new BoxWhisker({ name: '費用', binding: 'expenses', groupWidth: 0.7, gapWidth: 0.2, boxPlotData: data.map(item => item.expensesBoxPlotData) }); let sortMode = document.querySelector('#sortMode'); let filterMode = document.querySelector('#filterMode'); let outliers = document.querySelector('#outliers'); let viewState = document.querySelector('#viewState'); // チャートを作成する let theChart = new FlexChart('#theChart', { itemsSource: view, bindingX: 'country', tooltip: { content: '{seriesName}: <b>{x}</b>' }, palette: getRandomPalette() }); // // 「sales」の箱ひげ図(BoxWhisker)シリーズを作成し、それをチャートに追加します。 theChart.series.push(salesSeries); // // 「expenses」の箱ひげ図(BoxWhisker)シリーズを作成し、それをチャートに追加します。 theChart.series.push(expensesSeries); // // BoxWhiskerシリーズをカスタマイズする document.querySelector('#innerPoints').addEventListener('click', e => { theChart.series.forEach((series) => { series.showInnerPoints = e.target.checked; }); }); document.querySelector('#outliers').addEventListener('click', e => { theChart.series.forEach((series) => { series.showOutliers = e.target.checked; }); setBoxPlotData(data, salesSeries, expensesSeries, outliers.checked); }); document.querySelector('#meanline').addEventListener('click', e => { theChart.series.forEach((series) => { series.showMeanLine = e.target.checked; }); }); document.querySelector('#meanmarker').addEventListener('click', e => { theChart.series.forEach((series) => { series.showMeanMarker = e.target.checked; }); }); document.querySelector('#rotated').addEventListener('click', e => { theChart.rotated = e.target.checked; }); document.querySelector('#sortMode').addEventListener('change', () => { applyViewState(view, sortMode.value, filterMode.value); updateViewState(view, viewState); }); document.querySelector('#filterMode').addEventListener('change', () => { applyViewState(view, sortMode.value, filterMode.value); updateViewState(view, viewState); }); document.querySelector('#btnDeleteFirst').addEventListener('click', () => { if (view.items.length) { view.removeAt(0); updateViewState(view, viewState); } }); // // ランダムなデータを作成する document.querySelector('#btnRandomize').addEventListener('click', () => { data = getData(); view = getView(data); theChart.beginUpdate(); theChart.itemsSource = view; setBoxPlotData(data, salesSeries, expensesSeries, outliers.checked); theChart.endUpdate(); applyViewState(view, sortMode.value, filterMode.value); updateViewState(view, viewState); }); setBoxPlotData(data, salesSeries, expensesSeries, outliers.checked); updateViewState(view, viewState); } function getView(data) { let view = new CollectionView(data); view.sortDescriptions.push(new SortDescription('sortKey', true)); return view; } function applyViewState(view, sortMode, filterMode) { view.deferUpdate(() => { view.sortDescriptions.clear(); if (sortMode === 'asc') { view.sortDescriptions.push(new SortDescription('sortKey', true)); } else if (sortMode === 'desc') { view.sortDescriptions.push(new SortDescription('sortKey', false)); } if (filterMode === 'am') { view.filter = item => item.sortKey.charAt(0).toUpperCase() <= 'M'; } else if (filterMode === 'nz') { view.filter = item => item.sortKey.charAt(0).toUpperCase() >= 'N'; } else { view.filter = null; } }); } function updateViewState(view, viewState) { let countries = view.items.map((item) => item.country).join(', '); viewState.textContent = '表示項目 (' + view.items.length + '/' + view.sourceCollection.length + '): ' + (countries || 'なし'); } function setBoxPlotData(data, salesSeries, expensesSeries, showOutliers) { salesSeries.boxPlotData = data.map(item => showOutliers ? createBoxPlotData(item.sales, true) : item.salesBoxPlotData); expensesSeries.boxPlotData = data.map(item => showOutliers ? createBoxPlotData(item.expenses, true) : item.expensesBoxPlotData); } // function getRandomPalette() { let palettes = Object.keys(Palettes).filter(prop => isArray(Palettes[prop])); let rand = Math.floor(Math.random() * palettes.length); // return Palettes[palettes[rand]]; }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexChart BoxWhisker</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div class="mb-3"> <label for="innerPoints">内部の点を表示:</label> <input id="innerPoints" type="checkbox"> <label for="outliers">外れ値を表示:</label> <input id="outliers" type="checkbox"> </div> <div class="mb-3"> <label for="meanline">平均線を表示:</label> <input id="meanline" type="checkbox"> <label for="meanmarker">平均マーカーを表示:</label> <input id="meanmarker" type="checkbox"> </div> <div class="mb-3"> <label for="rotated">回転:</label> <input id="rotated" type="checkbox"> <label for="btnRandomize">データを生成</label> <button id="btnRandomize" class="btn btn-outline-secondary"> 実行 </button> </div> <div class="mb-3"> <label for="sortMode">並べ替え:</label> <select id="sortMode" class="form-control form-control-inline"> <option value="asc" selected>国名 A-Z</option> <option value="desc">国名 Z-A</option> <option value="none">なし</option> </select> <label for="filterMode">フィルター:</label> <select id="filterMode" class="form-control form-control-inline"> <option value="all" selected>すべて</option> <option value="am">国名 A-M</option> <option value="nz">国名 N-Z</option> </select> <label for="btnDeleteFirst">最初の表示項目を削除</label> <button id="btnDeleteFirst" class="btn btn-outline-secondary"> 削除 </button> </div> <div id="viewState" class="view-state"></div> <div id="theChart"></div> </div> </body> </html>
// Create random raw arrays together with pre-processed box plot statistics. export function getData() { let countries = [ { country: 'アメリカ', sortKey: 'US' }, { country: 'カナダ', sortKey: 'Canada' }, { country: 'メキシコ', sortKey: 'Mexico' }, { country: 'ドイツ', sortKey: 'Germany' }, { country: 'イギリス', sortKey: 'UK' }, { country: 'フランス', sortKey: 'France' }, { country: '日本', sortKey: 'Japan' }, { country: '韓国', sortKey: 'Korea' }, { country: '中国', sortKey: 'China' } ], data = []; // for (let i = 0; i < countries.length; i++) { let sales = getRandomArray(20, 10000); let expenses = getRandomArray(20, 5000); data.push({ country: countries[i].country, sortKey: countries[i].sortKey, sales: sales, expenses: expenses, salesBoxPlotData: createBoxPlotData(sales), expensesBoxPlotData: createBoxPlotData(expenses) }); } // return data; } // function getRandomArray(count, max) { let arr = []; // for (var i = 0; i < count; i++) { arr.push(Math.random() * max / 3 + Math.random() * max / 3 + Math.random() * max / 3); } // return arr; } export function createBoxPlotData(values, showOutliers = false) { let data = values.slice().sort((a, b) => a - b); let len = data.length; let total = data.reduce((sum, value) => sum + value, 0); let firstQuartile = quartileInclusive(data, 0.25); let median = quartileInclusive(data, 0.5); let thirdQuartile = quartileInclusive(data, 0.75); let iqr = 1.5 * Math.abs(thirdQuartile - firstQuartile); let minLimit = firstQuartile - iqr; let maxLimit = thirdQuartile + iqr; let outlierPoints = []; let min = data[0]; let max = data[len - 1]; let hasWhiskerValue = false; if (showOutliers) { min = data[len - 1]; max = data[0]; data.forEach(value => { if (value < minLimit || value > maxLimit) { outlierPoints.push(value); } else { hasWhiskerValue = true; if (value < min) { min = value; } if (value > max) { max = value; } } }); if (!hasWhiskerValue) { min = data[0]; max = data[len - 1]; } } return { min: min, max: max, mean: total / len, firstQuartile: firstQuartile, thirdQuartile: thirdQuartile, median: median, outlierPoints: outlierPoints, innerPoints: data.filter(value => value > min && value < max) }; } function quartileInclusive(data, percent) { let len = data.length; if (len === 1) { return data[0]; } let realIndex = (len - 1) * percent + 1; let index = Math.floor(realIndex); let fraction = realIndex - index; let base = data[index - 1]; return base + (data[index] - base) * fraction; }
.wj-flexchart { height: 300px; } label { width: 160px; text-align: right; } .form-control-inline { display: inline-block; width: auto; } .view-state { margin: 12px 0; } body { margin-bottom: 24px; }
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