Hello, I am looking for the right way to do a computation using "text manipulation, compute an expression on every row". I have a table consisting of 20 columns and about 15.000 rows. Column 1 is my untreated or control and I would like to normalize every other column to this control by simple division. As a result I would like to obtain a table in which column 1 is set to a value of 1 for every row, and the corresponding values in the other columns resulting from column x / column 1. I tried something like c2/c1,c3/c1,c4/c1... on a small testfile but that results in all normalized values being put into one column in brackets rather than being put into individual columns. What would be the right parameters? I also thought about creating a workflow consisting of successive divisions of the columns but that feels rather complicated. Is there an easier way? Any help would be much appreciated! Best, Tobias -- Tobias Hohenauer, PhD GCNA, Disease Mechanism Research Core RIKEN Brain Science Institute 2-1 Hirosawa, Wako-shi 351-0198 Japan