Hello guys,
So I have attached a sample of data I have and what I want. Essentially I have 200,000 rows and a bunch of columns years(1900-2000). For each year I have a column with data for each month, ie January 1901, feb 1901 ect. I want to take the value from those columns that match the year and month the observation was made. So say the observation was made Janurary 1901, I only want that value to stay and want to get rid of values for all the other month/year combinations. It should be clear in the sample excel file.
Thanks a bunch guys!!
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