チャート:複数の軸 (Vue)

ほとんどのチャートにはX軸とY軸の2つの軸があります。これは、チャート上のすべてのデータが同じ性質を持ち、同じスケールを共有できる限り、うまく機能します。

しかし、いくつかのチャートには、さまざまな種類のデータを表示する系列があり、単位やスケールが異なります。以下の図は、金額(売上と費用)を表す2つの系列と、数量(DL数)を表す1つの系列です。

1つのY軸に対してすべての系列をプロットすると、最初の2つの系列がグラフの最下部に向かって押し込められてしまいます。

この問題を解決して単一のチャートを使用する最も簡単な方法は、2つ目のY軸を作成し、それを「DL数」系列の axisYプロパティに割り当てることです。

このサンプルはVueを使用しています。

<template> <div class="container-fluid"> <div class="form-group"> <label for="secondaryAxis">2つ目のY軸</label> <input id="secondaryAxis" type="checkbox" checked="checked" v-on:change="saChange"> <wj-flex-chart bindingX="country" :itemsSource="data" :palette="palette" :initialized="initializeChart"> <wj-flex-chart-series binding="sales" name="売上"></wj-flex-chart-series> <wj-flex-chart-series binding="expenses" name="費用"></wj-flex-chart-series> <wj-flex-chart-series binding="downloads" name="DL数" chartType="LineSymbols"> <wj-flex-chart-axis wjProperty="axisY" position="Right" title="DL数(千)" format="n0," :min="0" :axisLine="true"></wj-flex-chart-axis> </wj-flex-chart-series> <wj-flex-chart-axis wjProperty="axisY" format="n0," title="売上/費用(千ドル)" :axisLine="true"></wj-flex-chart-axis> </wj-flex-chart> </div> </div> </template> <script setup> import { getData } from "./data"; import { isArray } from "@mescius/wijmo"; import { Palettes } from "@mescius/wijmo.chart"; import { ref } from "vue"; const data = ref(getData()); const palette = ref(getRandomPalette()); const ser = ref(null); const axisY = ref(null); function initializeChart(flex) { ser.value = flex.series[2]; axisY.value = ser.value.axisY; } function getRandomPalette() { let palettes = Object.keys(Palettes).filter((prop) => isArray(Palettes[prop])); let rand = Math.floor(Math.random() * palettes.length); // return Palettes[palettes[rand]]; } function saChange(sa) { ser.value.axisY = sa.target.checked ? axisY.value : null; } </script> <style> body { margin-bottom: 24px; } label { margin-right: 3px; } </style>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexChart Multiple Axes</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="compiler.js" type="module"></script> <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.js'); </script> </head> <body> <div id="app"></div> </body> </html>
export function getData() { let countries = 'アメリカ,カナダ,メキシコ,ドイツ,イギリス,フランス,イタリア,日本,韓国,中国'.split(','), data = []; // for (let i = 0; i < countries.length; i++) { data.push({ country: countries[i], sales: 1000 + Math.random() * 10000, expenses: 1000 + Math.random() * 5000, downloads: Math.round(Math.random() * 100000) }); } // return data; }
(function (global) { System.config({ transpiler: 'plugin-babel', babelOptions: { es2015: true }, meta: { '*.css': { loader: 'css' }, '*.vue': { loader: '../plugin-vue/index.js' } //'*.vue': { loader: 'systemjs-plugin-vue' } }, paths: { // paths serve as alias 'npm:': 'node_modules/' }, // map tells the System loader where to look for things map: { '@mescius/wijmo': 'npm:@mescius/wijmo/index.js', '@mescius/wijmo.input': 'npm:@mescius/wijmo.input/index.js', '@mescius/wijmo.styles': 'npm:@mescius/wijmo.styles', '@mescius/wijmo.cultures': 'npm:@mescius/wijmo.cultures', '@mescius/wijmo.chart': 'npm:@mescius/wijmo.chart/index.js', '@mescius/wijmo.chart.analytics': 'npm:@mescius/wijmo.chart.analytics/index.js', '@mescius/wijmo.chart.animation': 'npm:@mescius/wijmo.chart.animation/index.js', '@mescius/wijmo.chart.annotation': 'npm:@mescius/wijmo.chart.annotation/index.js', '@mescius/wijmo.chart.finance': 'npm:@mescius/wijmo.chart.finance/index.js', '@mescius/wijmo.chart.finance.analytics': 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