Add a new column with a function similar to vlookup in Excel
I'm trying to figure out how to add a new column to a table that will populate with data dependent on other data in that row. We have several fermentations in a data frame. Each one has a blank value. I'd like to have the blank value from each fermentation in a new column so that I can subtract it from the treatment value. Also if there's a better way to do this than creating a new column that wou...