GanttRepeat

Gantt charts illustrate project schedules. They show the start and finish dates of each task and typically add information such as the completion state of each task and dependencies between tasks.

This sample shows how you can use the FlexChart to create a Gantt chart with repeating tasks.

It does this by adding data items with the same (numeric) "X" value.

The Y axis has an itemFormatter that replaces the bound X values (index) with the task names.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import { FlexChart } from '@grapecity/wijmo.chart'; import { format } from '@grapecity/wijmo'; import { getData } from './data'; document.readyState === 'complete' ? init() : window.onload = init; function init() { // create simple Gantt chart var theChart = new FlexChart('#theChart', { itemsSource: getData(), chartType: 'Bar', bindingX: 'index', series: [ { binding: 'start,end' } ], axisY: { majorGrid: false, minorGrid: true, reversed: true, itemFormatter: formatter }, plotMargin: 'auto auto auto 180', tooltip: { content: getTooltipContent } }); // replace item index with item name in Y axis function formatter(engine, label) { var data = theChart.itemsSource; for (let i = 0; i < data.length; i++) { let item = data[i]; if (item.index == label.val) { label.text = item.name; break; } } return label; } // show task name and duraction in tooltip function getTooltipContent(ht) { var str = format('<b>{name}</b>:<br/>{start:d} - {end:d}', { name: ht.item.name, start: ht.item.start, end: ht.item.end }); return str; } }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexChart Gantt Repeat</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div id="theChart"></div> </div> </body> </html>
import { DateTime } from '@grapecity/wijmo'; export function getData() { let data = []; let date = new Date(); // add some regular tasks for (let i = 0; i < 3; i++) { let low = i + Math.ceil(Math.random() * 10); let high = low + Math.ceil(Math.random() * 10); data.push({ index: i, name: 'Regular Task ' + (i + 1), start: new Date(date.getTime() + low * 3600 * 24 * 1000), end: new Date(date.getTime() + high * 3600 * 24 * 1000) }); } // add a repeating task (same "index" value) let dt = data[0].start; for (let i = 0; i < 5; i++) { data.push({ index: 3, name: 'First Repeating Task', start: dt, end: DateTime.addDays(dt, 4) }); dt = DateTime.addDays(dt, 7); } // add another repeating task dt = DateTime.addDays(data[0].start, 2); for (let i = 0; i < 5; i++) { data.push({ index: 4, name: 'Second Repeating Task', start: dt, end: DateTime.addDays(dt, 5) }); dt = DateTime.addDays(dt, 7); } // done return data; }
body { margin-bottom: 24pt; }
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