Calculated Field Aggregates

PivotField 객체에는 사용자 정의 계산을 지원하는 두 가지 속성이 있습니다. getValue 속성은 데이터 항목(data item)을 매개 변수로 사용하고 데이터 항목의 다른 속성을 기반으로 계산 된 값을 반환하는 함수입니다. 이 함수는 집계(aggregate) 정보에 액세스 할 수 없습니다. 이 샘플은 getValue 함수를 사용하여 원본(Raw) 판매 값를 "높음", "중간"또는 "낮음"의 세 가지 수준으로 분류하는 Range 필드를 구현합니다.

getAggregateValue 속성은 요약 행(summary row)을 매개 변수로 사용하고 필드의 집계로 표시 할 값을 반환하는 함수입니다. 이 기능은 개별(individual)/원본(raw) 데이터 항목에 액세스 할 수 없습니다. 이 샘플은 getAggregateValue 함수를 사용하여 각 요약 행의 판매/다운로드 비율을 표시하는 Conversion 필드를 구현합니다.

OLAP 알아보기 | PivotPanel Documentation | PivotPanel API Reference

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import '@grapecity/wijmo.touch'; // support drag/drop on touch devices import { PivotEngine, PivotPanel, PivotGrid } from '@grapecity/wijmo.olap'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { let ng = new PivotEngine({ autoGenerateFields: false, itemsSource: getData(10000), showColumnTotals: 'GrandTotals', showRowTotals: 'Subtotals', fields: [ { binding: 'product', header: 'Product' }, { binding: 'date', header: 'Date', format: 'yyyy \"Q\"q' }, { header: 'Range', dataType: 'String', aggregate: 'Cnt', // use getValue to calculate the sales range (High, Medium, or Low) getValue: (item) => { let sales = item.sales; return sales <= 13 ? 'Low' : sales >= 17 ? 'High' : 'Medium'; } }, { binding: 'sales', header: 'Sales', format: 'n0' }, { binding: 'downloads', header: 'Downloads', format: 'n0' }, { header: 'Conversion', dataType: 'Number', format: 'p0', // getAggregateValue computes an aggregate from a summary row (Sales/Downloads) getAggregateValue: row => row.Downloads ? row.Sales / row.Downloads : 0 } ], rowFields: ['Date', 'Range'], valueFields: ['Sales', 'Downloads', 'Conversion'] }); // // show panel new PivotPanel('#pivotPanel', { itemsSource: ng }); // // show summary new PivotGrid('#pivotGrid', { isReadOnly: true, itemsSource: ng }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo OLAP Field Calculated Aggregates</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-sm-6"> <div id="pivotPanel"></div> </div> <div class="col-sm-6"> <div id="pivotGrid"></div> </div> </div> </div> </body> </html>
export function getData(cnt) { let year = new Date().getFullYear(), data = []; // for (let i = 0; i < cnt; i++) { data.push({ product: randomInt(0, 1) ? 'Wijmo' : 'Aoba', country: randomInt(0, 1) ? 'USA' : 'Japan', active: i % 2 == 0, date: new Date(year - randomInt(0, 2), randomInt(0, 11), randomInt(0, 27) + 1), sales: randomInt(10, 20), downloads: randomInt(10, 200) }); } // return data; } function randomInt(min, max) { return Math.floor(Math.random() * (max - min + 1) + min); }
.wj-pivotgrid { max-height: 400px; box-shadow: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23); } .wj-pivotgrid .wj-cell.spark { padding: 8px; overflow: visible; } .wj-pivotgrid .wj-cell.spark svg { overflow: visible; stroke: currentColor; fill: currentColor; } .wj-pivotgrid .wj-cell.spark.spark-up svg { color: #009000; /* green for up */ } .wj-pivotgrid .wj-cell.spark.spark-down svg { color: #d00000; /* red for down */ } body { margin-bottom: 48pt; }
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