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2010 Mar 12
5
Vertical subtraction in dataframes
Hello all,
I have not been able to find an answer to this problem. I feel like it might
be so simple though that it might not get a response.
Suppose I have a dataframe like the one I have copied below (minus the
'calib' column). I wish to create a column like calib where I am subtracting
the 'Count' when 'stain' is 'none' from all other 'Count' data for