Let's say I have a data frame with values from column 1-11. For columns 1-10, I want to subtract column 11. Basically I want dataframe[1]-dataframe[11], dataframe[2]-dataframe[11], dataframe[3]-dataframe[11], dataframe[n] - dataframe[11], etc...
So basically, in VBA terms, it would be like:
For each column in dataframe, starting with column 1, subtract column 11 from it.
How do I do that?
Thanks!