Google App Script / Spreadsheet - How to get filter criteria?

Question

Is it possible to get the filter criteria of my data set. For example, if one of my column is \"Department\" and I filtered the data to display only \"IT\". How do we get th

Answer 1

Google Spreadsheet already has a FILTER formula (I always use this page to remind me how to do it). So for example if your data looked like this

  A
1 Department
2 IT Department (Edinburgh)
3 Department of IT
4 Other Department

to get a filtered list you could use the formula

=FILTER(A:A;FIND("IT",A:A)>0)

(Working example here)

If you want to do something entirely in Apps Script Romain Vialard has written a Managed Library with a filter function. Here are instructions for installing and using the 2D Array2 library