javascript - ARRAYFORMULA with getNotes

Question

Is it possible to use an Arrayformula to populate the entire column on the formula "getNotes"? https://developers.google.com/apps-script/reference/spreadsheet/range#getNotes()

So far I've added the small function on Apps Script as follows:

function getNotes(cell)
{
   var ss = SpreadsheetApp.getActiveSpreadsheet();
   var range = ss.getRange(cell)
   return range.getNotes();   
}

Then populated the column's first cell as follows:

=ARRAYFORMULA(IFERROR(getNotes(Address(row(B1:B), column(B1:B)))))

which does not seem to work. For the record,

=getNotes(Address(row(B2:B), column(B2:B)))

does work fine.

Answer 1

Updated answer based on your comment:

If you want to transpose the full range of columns and pass the full column B "B1:B", you can use this instead:

function getNotes(rng){
  const ss = SpreadsheetApp.getActive().getActiveSheet();
  const index = ss.getMaxRows()-ss.getRange(rng).getNotes().flat().reverse().findIndex(v=>v!='');
  const range = ss.getRange(rng+index);
  return range.getNotes();
}

Essentially, this script will find the last cell that has a note and return until that cell instead of the full range:

You can also use getNotes("B1:B") which will work in the same way, but it will spread the values in a column instead of a row.

Explanation:

As Tanaike mentioned in his comment, your current code:

function getNotes(cell)
{
   var ss = SpreadsheetApp.getActiveSpreadsheet();
   var range = ss.getRange(cell)
   return range.getNotes();   
}

requires to pass the desired range as string:

=getNotes("B1:B")

You don't need an arrayformula as this custom function returns an array itself.

You can then do use built-in google sheets formulas if you want, like transpose:

Alternative approach:

You can use the getRange(row, column, numRows, numColumns) method of the sheet object instead which allows you to pass numbers if you want:

function getNotes(rs,cs,re,ce)
{
   var ss = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
   var range = ss.getRange(rs,cs,re,ce);
   return range.getNotes();
}

and then call it like that =getNotes(1,2,3,1):

This is a useful link to see how this getRange method works.