Displaying 1 result from an estimated 1 matches for "chab1999".
2011 Nov 11
3
Combining Overlapping Data
...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 times in x and none in y (so i dont want
that retained).
I want to create a new data frame that has all 175 measurements for
"Chab1405" and any other 'strain' that appears in both the two data sets..
but not strains that appear in only one data set...So i...