import 'bootstrap.css';
import '@mescius/wijmo.styles/wijmo.css';
import './styles.css';
import * as wjChart from '@mescius/wijmo.chart';
import * as wjChartAnalytics from '@mescius/wijmo.chart.analytics';
import * as wjInput from '@mescius/wijmo.input';
import { getData } from './data';
//
document.readyState === 'complete' ? init() : window.onload = init;
//
function init() {
// create the chart
let theChart = new wjChart.FlexChart('#theChart', {
itemsSource: getData(),
chartType: 'Scatter',
axisY: {
axisLine: true
},
bindingX: 'x',
series: [
{ name: 'Raw Data', binding: 'y' }
]
});
//
// show the equation on the chart
let equation = document.getElementById('equation');
//
// create a TrendLine and add it to the Chart series collection
let trendLine = new wjChartAnalytics.TrendLine();
trendLine.binding = 'y';
trendLine.style = { stroke: 'darkred', strokeWidth: 3 };
trendLine.visibility = wjChart.SeriesVisibility.Hidden;
function updateTrendLineRange() {
let data = theChart.itemsSource;
let xValues = data.map(item => item.x);
let minX = Math.min(...xValues);
let maxX = Math.max(...xValues);
let range = maxX - minX;
trendLine.minX = minX - (range * 0.1); // 10% of range below minX
trendLine.maxX = maxX + (range * 0.3); // 30% of range above maxX
}
updateTrendLineRange(); // Initial call to set the range
theChart.series.push(trendLine);
//
// select trendline order
let order = new wjInput.InputNumber('#order', {
value: trendLine.order,
step: 1,
min: 1,
max: 6,
valueChanged: (s) => {
if (s.value >= s.min && s.value <= s.max) {
trendLine.order = s.value;
showEquation();
}
}
});
//
// select fit type
let fitType = new wjInput.ComboBox('#fitType', {
isRequired: false,
placeholder: 'None',
textChanged: (s) => {
trendLine.name = s.text;
if (s.text) { // show trendline
trendLine.fitType = s.text;
trendLine.visibility = wjChart.SeriesVisibility.Visible;
}
else { // hide trendline
trendLine.visibility = wjChart.SeriesVisibility.Hidden;
}
switch (s.text) { // enable/disable order input
case 'Polynomial':
case 'Fourier':
order.isDisabled = false;
break;
default:
order.isDisabled = true;
break;
}
showEquation();
},
itemsSource: 'Linear,Exponential,Logarithmic,Power,Fourier,Polynomial,MinX,MinY,MaxX,MaxY,AverageX,AverageY'.split(',')
});
//
// show updated equation on a timeOut since the TrendLine update is async
function showEquation() {
equation.innerHTML = '';
setTimeout(() => equation.innerHTML = trendLine.getEquation(), 100);
}
//
// randomize the data
document.querySelector('#btnRandomize').addEventListener('click', () => {
theChart.itemsSource = getData();
showEquation();
});
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>MESCIUS 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/0.21.5/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">
<label for="fitType">Trendline Type: </label>
<div id="fitType"></div><br />
<label for="order">Order: </label>
<div id="order"></div><br />
<label>Equation: </label>
<div id="equation" class="equation"></div><br />
<label for="btnRandomize">Randomize Data</label>
<button id="btnRandomize" class="btn btn-default">
Go
</button>
<div id="theChart"></div>
</div>
</body>
</html>
// data sources
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;
}
.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;
}
body {
margin-bottom: 24pt;
}
(function (global) {
System.config({
transpiler: 'plugin-babel',
babelOptions: {
es2015: 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.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.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.touch': 'npm:@mescius/wijmo.touch/index.js',
'@mescius/wijmo.cloud': 'npm:@mescius/wijmo.cloud/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',
'jszip': 'npm:jszip/dist/jszip.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'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
src: {
defaultExtension: 'js'
},
"node_modules": {
defaultExtension: 'js'
},
}
});
})(this);
