CellMaker Sparklines (React)

The CellMaker class provides a simple way to create custom cells of common types.

This sample shows how to use the CellMaker class to create cells with sparklines.

Sparklines are small charts used to show trends in a series of values, such as seasonal increases or decreases, economic cycles, or to highlight maximum and minimum values.

The CellMaker.makeSparkline method gets the chart data from the column binding. It allows you to set choose the type of sparkline (line, column, or win/loss), markers you want to display and label expression to improve accessibility.

Learn about FlexGrid | FlexGrid API Reference

This example uses React.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React from 'react'; import { CellMaker, SparklineType, SparklineMarkers } from '@mescius/wijmo.grid.cellmaker'; import { FlexGrid, FlexGridColumn } from '@mescius/wijmo.react.grid'; import './app.css'; import { getData, getCountries } from './data'; const countries = getCountries(); const data = getData(1000); function App() { return (<div className="container-fluid"> <FlexGrid showMarquee={true} selectionMode="MultiRange" autoGenerateColumns={false} itemsSource={data}> <FlexGridColumn binding="id" header="ID" isReadOnly={true} width={80}/> <FlexGridColumn binding="country" header="Country" dataMap={countries}/> <FlexGridColumn binding="history" header="Sparklines: Line" width={175} cellTemplate={CellMaker.makeSparkline({ //maxPoints: 5, markers: SparklineMarkers.High | SparklineMarkers.Low, label: '${item.country} sales history line chart', })}/> <FlexGridColumn binding="history" header="Sparklines: Column" width={175} cellTemplate={CellMaker.makeSparkline({ //maxPoints: 5, type: SparklineType.Column, markers: SparklineMarkers.High | SparklineMarkers.Low, label: '${item.country} sales history column chart' })}/> <FlexGridColumn binding="history" header="Sparklines: WinLoss" width={175} cellTemplate={CellMaker.makeSparkline({ //maxPoints: 5, type: SparklineType.WinLoss, markers: SparklineMarkers.Negative, label: '${item.country} sales history win/loss chart' })}/> </FlexGrid> </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 FlexGrid CellMaker: Sparklines</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-flexgrid { max-height: 300px; } .wj-flexgrid .wj-cell { padding: 6px 10px; }
export function getCountries() { return ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece']; } export function getData(cnt) { let countries = getCountries(), data = []; for (var i = 0; i < cnt; i++) { let country = countries[i % countries.length]; data.push({ id: i, country: country, url: 'https://visit.' + country + '.com', downloads: Math.round(Math.random() * 1000), sales: Math.random() * 2000, expenses: Math.random() * 1000, checked: i % 4 == 0, history: getValues(3 + Math.random() * 20, 100), img: 'https://cdn.grapecity.com/wijmo/images/' + (i % 4 + 1) + '.png', rating: Math.floor(Math.random() * 5) }); } return data; } function getValues(cnt, max) { let values = [], val = Math.random() * max; for (let i = 0; i < cnt; i++) { val = Math.min(max, val + (Math.random() - 0.5) * max / 5); values.push(val); } return values; }
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