Issue with creating a rolling cumulative sum as a function of time
Hello, I have a simple example where we do a kinetic ( in column "time (min)") for a bunch of samples ( in column "variable x"). I need to create a new column that run a cumulative sum that accounts for the time elapsed for each one of the samples listed in "variable x". I tried the col cumulative sum function but it does not do accomplish the goal. I suspect a good approach would be with row, lag...