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2011 Nov 11
3
Combining Overlapping Data
I've scoured the archives but have found no concrete answer to my question.
Problem: Two data sets
1st data set(x) = 20,000 rows
2nd data set(y) = 5,000 rows
Both have the same column names, the column of interest to me is a variable
called strain.
For example, a strain named "Chab1405" appears in x 150 times and in y 25
times...
strain "Chab1999" only appears 200