Oddities in Google docs spreadsheet

Custom Functions

If a custom JavaScript function in Google docs spreadsheet is put into a cell it cannot write in other cells than its own. I find this quite odd but a workaround I used was to create a custom Menu item that just fetches the values it needed and wrote the outputs in the cell.

What I initially had in mind was something like this:

Where myCustomFunction() is:

But as stated above this doesn’t work. The following error message is displayed: You do not have permission to call setValue. The reason as to why it’s not allowed is beyond me but the same question was asked on the Google support forums where a Google employee simply stated it wasn’t possible. The workarounds that he suggested were “…running your script inside the editor, or from a drawing…“.

I didn’t really find that to be neat enough so my workaround as stated before was to modify the function to retrieve the values itself and do its thing with the output cells. Google provides excellent tutorials on how to accomplish both things.

Google tutorial: Modifying cells
Google tutorial: Creating menu items

Data validation bug?

When you want to know the last index that contains data you can do it like so: sheet.getDataRange().getLastRow(). However if you have a Data validation on a column, it seems as if that defines that every cell has a value, even if the cells are all empty. This makes the above function call return the number 101 (the default number of rows). When I removed the data validation from the column it returned the right index.

Sorting

You can’t sort individual columns apart from others. You can freeze up to the first 5 rows and columns, meaning they won’t be affected by the sorting. Beyond that I guess the only solution is to spread to multiple sheets.