I'd like to be able to import data from different spreadsheets, do some arbitrarily complex operations on it programmatically (filtering, averaging, removing/adding columns, etc) and then save it back to the main spreadsheet.
I'm already able to import data from other spreadsheets, but I am currently manipulating it with loops as arrays of arrays (low level operations).
In python I would use something like pandas dataframes to manipulate the tabular data. Is there a class in Google Apps Script that exposes functionality similar to that? Allowing for filtering, appending, row/column-wise operations, etc?