How can I generate multiple reports in Google Sheets with a single loop using JavaScript?

Other Questions Google Sheets
1

I need an efficient JavaScript solution to create several reports from one dataset without iterating multiple times. Below is an alternative sample:

function createQuickReport() {
  var spreadsheet = SpreadsheetApp.getActiveSpreadsheet();
  var sourceSheet = spreadsheet.getSheetByName('Responses');
  var targetSheet = spreadsheet.getSheetByName('Summary');
  var data = sourceSheet.getDataRange().getValues();
  var reportData = [];
  for (var i = 1; i < data.length; i++) {
    var recordTime = new Date(data[i][1]);
    var hourLabel = Utilities.formatDate(recordTime, spreadsheet.getSpreadsheetTimeZone(), 'ha');
    reportData.push([hourLabel, data[i][2]]);
  }
  targetSheet.getRange(2, 1, reportData.length, 2).setValues(reportData);
  SpreadsheetApp.flush();
}
2

I recently tackled a similar problem where I needed to make the report generation process more efficient. I found that instead of making multiple passes over the data, it’s beneficial to collect all necessary information in one go. I achieved this by managing a composite object that records various metrics during a single iteration. Later, I used that data structure to populate different reports. This shift in data handling not only improved performance but also made maintaining the code easier, as everything stayed consolidated within one loop. It’s a strategy worth trying if performance is a concern.

3

hey, have you tried grouping data inside one loop into an object? then you can update each report sheet from that same loop. it worked fine for me, so maybe shift from array push to object properties and iterate on that afterwards