Value Fields (Measures)

The PivotEngine has several field collections exposed as properties. valueFields contain fields used as "measures", typically numeric values that are summarized by the engine. Use the PivotPanel to drag multiple copies of fields into the valueFields collection. When you do that, the panel creates clones that have their own properties. This allows you to summarize fields using different aggregates and calculations.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import '@grapecity/wijmo.touch'; // support drag/drop on touch devices import * as wjOlap from '@grapecity/wijmo.olap'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // // initialize pivot engine var ngPanel = new wjOlap.PivotEngine({ itemsSource: getData(), valueFields: ['Amount'], rowFields: ['Buyer', 'Type'] // summarize amounts }); var amountField = ngPanel.fields.getField('Amount'); amountField.format = 'c0'; // customize field // // show pivot panel var pivotPanel = new wjOlap.PivotPanel('#pivotPanel', { itemsSource: ngPanel }); // // show summary var pivotPanelGrid = new wjOlap.PivotGrid('#pivotPanelGrid', { itemsSource: ngPanel }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Grapecity Wijmo OLAP Pivot Panel Value Fields</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 class="row"> <div class="col-xs-5"> <p> Drag and drop fields to build views: </p> <div id="pivotPanel"></div> </div> <div class="col-xs-7"> <p> Summary for the current view definition: </p> <div id="pivotPanelGrid"></div> </div> </div> </div> </body> </html>
// get the raw data export function getData() { var yr = new Date().getFullYear(); return [{ date: new Date(yr, 0, 1), buyer: 'Mom', type: 'Fuel', amount: 74 }, { date: new Date(yr, 0, 15), buyer: 'Mom', type: 'Food', amount: 235 }, { date: new Date(yr, 0, 17), buyer: 'Dad', type: 'Sports', amount: 20 }, { date: new Date(yr, 0, 21), buyer: 'Kelly', type: 'Books', amount: 125 }, { date: new Date(yr, 1, 2), buyer: 'Mom', type: 'Food', amount: 235 }, { date: new Date(yr, 1, 20), buyer: 'Kelly', type: 'Music', amount: 20 }, { date: new Date(yr, 1, 25), buyer: 'Kelly', type: 'Tickets', amount: 125 }, ]; }
.wj-pivotpanel { background: #eee; box-shadow: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23); } .wj-pivotpanel .wj-flexgrid { background: inherit; } .wj-pivotpanel [wj-part=d-vals] { background: gold; } body { margin-bottom: 24pt; }
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