import 'bootstrap.css';
import '@mescius/wijmo.styles/wijmo.css';
import ReactDOM from 'react-dom/client';
import React, { useEffect, useRef, useState } from 'react';
import useEvent from 'react-use-event-hook';
import * as wjcChart from '@mescius/wijmo.chart';
import * as wjInput from '@mescius/wijmo.react.input';
import * as wjChart from '@mescius/wijmo.react.chart';
import * as wjChartAnalysis from '@mescius/wijmo.react.chart.analytics';
import './app.css';
import { getData, comboData } from './data';
function App() {
const [data, setData] = useState(getData());
const [order, setOrder] = useState(2);
const [trendlineMinX, setTrendlineMinX] = useState(0);
const [trendlineMaxX, setTrendlineMaxX] = useState(0);
const theChartRef = useRef(null);
const eqEleRef = useRef(null);
const orderIptRef = useRef(null);
const trendLineRef = useRef(null);
const comboRef = useRef(null);
useEffect(() => {
eqEleRef.current = document.querySelector('#equation');
if (comboRef.current) {
reset(comboRef.current.selectedValue);
}
}, []);
const initializeInput = useEvent((flex) => {
orderIptRef.current = flex;
});
const initializeCombo = useEvent((flex) => {
comboRef.current = flex;
});
const initializeChart = useEvent((flex) => {
theChartRef.current = flex;
trendLineRef.current = flex.series[1];
updateTrendLineRange();
});
const orderChanged = useEvent((s) => {
if (s.value >= s.min && s.value <= s.max) {
setOrder(s.value);
updateTrendLineRange();
showEquation();
}
});
const showEquation = () => {
if (eqEleRef.current) {
eqEleRef.current.innerHTML = '';
setTimeout(() => eqEleRef.current.innerHTML = trendLineRef.current.getEquation(), 100);
}
};
const randomData = () => {
setData(getData());
updateTrendLineRange();
showEquation();
};
const textChanged = useEvent((s) => {
reset(s.text);
});
const updateTrendLineRange = () => {
let chart = theChartRef.current;
if (!chart)
return;
let data = chart.itemsSource;
let xValues = data.map(item => item.x);
let minX = Math.min(...xValues);
let maxX = Math.max(...xValues);
let range = maxX - minX;
setTrendlineMinX(minX - (range * 0.1)); // 10% of range below minX
setTrendlineMaxX(maxX + (range * 0.3)); // 30% of range above maxX
};
const reset = (text) => {
let trendLine = trendLineRef.current;
if (!trendLine) {
return;
}
trendLine.name = text;
if (text) { // show trendline
trendLine.fitType = text;
trendLine.visibility = wjcChart.SeriesVisibility.Visible;
}
else { // hide trendline
trendLine.visibility = wjcChart.SeriesVisibility.Hidden;
}
switch (text) { // enable/disable order input
case 'Polynomial':
case 'Fourier':
orderIptRef.current.isDisabled = false;
break;
default:
orderIptRef.current.isDisabled = true;
break;
}
updateTrendLineRange();
showEquation();
};
return (<div className="container-fluid">
<div className="form-group">
<label htmlFor="fitType">Trendline Type: </label>
<wjInput.ComboBox isRequired={false} placeholder="None" itemsSource={comboData} textChanged={textChanged} initialized={initializeCombo}/><br />
<label htmlFor="order">Order: </label>
<wjInput.InputNumber step={1} min={1} max={6} value={order} valueChanged={orderChanged} initialized={initializeInput}/>
<br />
<label>Equation: </label>
<div id="equation" className="equation"></div><br />
<label htmlFor="btnRandomize">Randomize Data</label>
<button id="btnRandomize" className="btn btn-default" onClick={randomData}>
Go
</button>
<wjChart.FlexChart itemsSource={data} chartType="Scatter" bindingX="x" initialized={initializeChart}>
<wjChart.FlexChartAxis wjProperty="axisY" axisLine={true}/>
<wjChart.FlexChartSeries name="Raw Data" binding="y"/>
<wjChartAnalysis.FlexChartTrendLine binding="y" minX={trendlineMinX} maxX={trendlineMaxX} order={order} style={{ stroke: 'darkred', strokeWidth: 3 }} visibility={wjcChart.SeriesVisibility.Hidden}/>
</wjChart.FlexChart>
</div>
</div>);
}
const container = document.getElementById('app');
if (container) {
const root = ReactDOM.createRoot(container);
root.render(<App />);
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>MESCIUS Wijmo Wijmo FlexChart Trendlines</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- SystemJS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.40/system.src.js" integrity="sha512-G6mEj6h18+m3MvzdviSDfPle/TfH0//cXcB33AKlNR/Rha0yQsKefDZKRTkIZos97HEGq2JMV1RT5ybMoQ3WsQ==" crossorigin="anonymous"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('./src/app');
</script>
</head>
<body>
<div id="app"></div>
</body>
</html>
.wj-flexchart {
height: 250px;
margin: 10px 0;
}
.wj-control {
margin-bottom: 3px;
}
label {
width: 120px;
text-align: right;
}
.equation {
display: inline-block;
font-style: italic;
font-size: 80%;
}
.wj-combobox,
.wj-inputnumber {
width: 120px;
margin-right: 12px;
}
export function getData() {
let arr = [], cnt = 50, a = Math.random(), b = Math.random();
//
for (let i = 1; i < cnt; i++) {
arr.push({
x: i,
y: a + i * b + i * Math.random()
});
}
//
return arr;
}
export const comboData = ['Linear', 'Exponential', 'Logarithmic', 'Power', 'Fourier', 'Polynomial', 'MinX', 'MinY', 'MaxX', 'MaxY', 'AverageX', 'AverageY'];
(function (global) {
window.process = {
env: {
NODE_ENV: "production"
}
}
System.config({
transpiler: 'plugin-babel',
babelOptions: {
es2015: true,
react: true
},
meta: {
'*.css': { loader: 'css' }
},
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things
map: {
'jszip': 'npm:jszip/dist/jszip.js',
'@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': 'npm:@mescius/wijmo.chart.finance.analytics/index.js',
'@mescius/wijmo.chart.hierarchical': 'npm:@mescius/wijmo.chart.hierarchical/index.js',
'@mescius/wijmo.chart.interaction': 'npm:@mescius/wijmo.chart.interaction/index.js',
'@mescius/wijmo.chart.radar': 'npm:@mescius/wijmo.chart.radar/index.js',
'@mescius/wijmo.chart.render': 'npm:@mescius/wijmo.chart.render/index.js',
'@mescius/wijmo.chart.webgl': 'npm:@mescius/wijmo.chart.webgl/index.js',
'@mescius/wijmo.chart.map': 'npm:@mescius/wijmo.chart.map/index.js',
'@mescius/wijmo.gauge': 'npm:@mescius/wijmo.gauge/index.js',
'@mescius/wijmo.grid': 'npm:@mescius/wijmo.grid/index.js',
'@mescius/wijmo.grid.detail': 'npm:@mescius/wijmo.grid.detail/index.js',
'@mescius/wijmo.grid.filter': 'npm:@mescius/wijmo.grid.filter/index.js',
'@mescius/wijmo.grid.search': 'npm:@mescius/wijmo.grid.search/index.js',
'@mescius/wijmo.grid.style': 'npm:@mescius/wijmo.grid.style/index.js',
'@mescius/wijmo.grid.grouppanel': 'npm:@mescius/wijmo.grid.grouppanel/index.js',
'@mescius/wijmo.grid.multirow': 'npm:@mescius/wijmo.grid.multirow/index.js',
'@mescius/wijmo.grid.transposed': 'npm:@mescius/wijmo.grid.transposed/index.js',
'@mescius/wijmo.grid.transposedmultirow': 'npm:@mescius/wijmo.grid.transposedmultirow/index.js',
'@mescius/wijmo.grid.pdf': 'npm:@mescius/wijmo.grid.pdf/index.js',
'@mescius/wijmo.grid.sheet': 'npm:@mescius/wijmo.grid.sheet/index.js',
'@mescius/wijmo.grid.xlsx': 'npm:@mescius/wijmo.grid.xlsx/index.js',
'@mescius/wijmo.grid.selector': 'npm:@mescius/wijmo.grid.selector/index.js',
'@mescius/wijmo.grid.cellmaker': 'npm:@mescius/wijmo.grid.cellmaker/index.js',
'@mescius/wijmo.grid.immutable': 'npm:@mescius/wijmo.grid.immutable/index.js',
'@mescius/wijmo.touch': 'npm:@mescius/wijmo.touch/index.js',
'@mescius/wijmo.cloud': 'npm:@mescius/wijmo.cloud/index.js',
'@mescius/wijmo.nav': 'npm:@mescius/wijmo.nav/index.js',
'@mescius/wijmo.odata': 'npm:@mescius/wijmo.odata/index.js',
'@mescius/wijmo.olap': 'npm:@mescius/wijmo.olap/index.js',
'@mescius/wijmo.rest': 'npm:@mescius/wijmo.rest/index.js',
'@mescius/wijmo.pdf': 'npm:@mescius/wijmo.pdf/index.js',
'@mescius/wijmo.pdf.security': 'npm:@mescius/wijmo.pdf.security/index.js',
'@mescius/wijmo.viewer': 'npm:@mescius/wijmo.viewer/index.js',
'@mescius/wijmo.xlsx': 'npm:@mescius/wijmo.xlsx/index.js',
'@mescius/wijmo.undo': 'npm:@mescius/wijmo.undo/index.js',
'@mescius/wijmo.interop.grid': 'npm:@mescius/wijmo.interop.grid/index.js',
'@mescius/wijmo.barcode': 'npm:@mescius/wijmo.barcode/index.js',
'@mescius/wijmo.barcode.common': 'npm:@mescius/wijmo.barcode.common/index.js',
'@mescius/wijmo.barcode.composite': 'npm:@mescius/wijmo.barcode.composite/index.js',
'@mescius/wijmo.barcode.specialized': 'npm:@mescius/wijmo.barcode.specialized/index.js',
"@mescius/wijmo.react.chart.analytics": "npm:@mescius/wijmo.react.chart.analytics/index.js",
"@mescius/wijmo.react.chart.animation": "npm:@mescius/wijmo.react.chart.animation/index.js",
"@mescius/wijmo.react.chart.annotation": "npm:@mescius/wijmo.react.chart.annotation/index.js",
"@mescius/wijmo.react.chart.finance.analytics": "npm:@mescius/wijmo.react.chart.finance.analytics/index.js",
"@mescius/wijmo.react.chart.finance": "npm:@mescius/wijmo.react.chart.finance/index.js",
"@mescius/wijmo.react.chart.hierarchical": "npm:@mescius/wijmo.react.chart.hierarchical/index.js",
"@mescius/wijmo.react.chart.interaction": "npm:@mescius/wijmo.react.chart.interaction/index.js",
"@mescius/wijmo.react.chart.radar": "npm:@mescius/wijmo.react.chart.radar/index.js",
"@mescius/wijmo.react.chart": "npm:@mescius/wijmo.react.chart/index.js",
"@mescius/wijmo.react.core": "npm:@mescius/wijmo.react.core/index.js",
'@mescius/wijmo.react.chart.map': 'npm:@mescius/wijmo.react.chart.map/index.js',
"@mescius/wijmo.react.gauge": "npm:@mescius/wijmo.react.gauge/index.js",
"@mescius/wijmo.react.grid.detail": "npm:@mescius/wijmo.react.grid.detail/index.js",
"@mescius/wijmo.react.grid.filter": "npm:@mescius/wijmo.react.grid.filter/index.js",
"@mescius/wijmo.react.grid.grouppanel": "npm:@mescius/wijmo.react.grid.grouppanel/index.js",
'@mescius/wijmo.react.grid.search': 'npm:@mescius/wijmo.react.grid.search/index.js',
"@mescius/wijmo.react.grid.multirow": "npm:@mescius/wijmo.react.grid.multirow/index.js",
"@mescius/wijmo.react.grid.sheet": "npm:@mescius/wijmo.react.grid.sheet/index.js",
'@mescius/wijmo.react.grid.transposed': 'npm:@mescius/wijmo.react.grid.transposed/index.js',
'@mescius/wijmo.react.grid.transposedmultirow': 'npm:@mescius/wijmo.react.grid.transposedmultirow/index.js',
'@mescius/wijmo.react.grid.immutable': 'npm:@mescius/wijmo.react.grid.immutable/index.js',
"@mescius/wijmo.react.grid": "npm:@mescius/wijmo.react.grid/index.js",
"@mescius/wijmo.react.input": "npm:@mescius/wijmo.react.input/index.js",
"@mescius/wijmo.react.olap": "npm:@mescius/wijmo.react.olap/index.js",
"@mescius/wijmo.react.viewer": "npm:@mescius/wijmo.react.viewer/index.js",
"@mescius/wijmo.react.nav": "npm:@mescius/wijmo.react.nav/index.js",
"@mescius/wijmo.react.base": "npm:@mescius/wijmo.react.base/index.js",
'@mescius/wijmo.react.barcode.common': 'npm:@mescius/wijmo.react.barcode.common/index.js',
'@mescius/wijmo.react.barcode.composite': 'npm:@mescius/wijmo.react.barcode.composite/index.js',
'@mescius/wijmo.react.barcode.specialized': 'npm:@mescius/wijmo.react.barcode.specialized/index.js',
'jszip': 'npm:jszip/dist/jszip.js',
'react': 'npm:react/index.js',
'react-dom': 'npm:react-dom/index.js',
'react-dom/client': 'npm:react-dom/client.js',
"scheduler": "npm:scheduler/index.js",
'redux': 'npm:redux/dist/redux.min.js',
'react-redux': 'npm:react-redux/dist/react-redux.min.js',
'bootstrap.css': 'npm:bootstrap/dist/css/bootstrap.min.css',
'css': 'npm:systemjs-plugin-css/css.js',
'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js',
'systemjs-babel-build':'npm:systemjs-plugin-babel/systemjs-babel-browser.js',
"react-use-event-hook": "npm:react-use-event-hook/dist/esm/useEvent.js",
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
src: {
defaultExtension: 'jsx'
},
"node_modules": {
defaultExtension: 'js'
},
}
});
})(this);