I have a dataset Id system1 system2 system3 system4 1 0001 0001 0001 0002 2 0002 0001 0002 0003 3 0003 0002 0002 0004 4 missing 0001 missing missing I want to the new data set to include a new column which is the most frequent value across these systems. Id system1 system2 system3 system4 mostfrequent countofmostfrequent 1 0001 0001 0001 0002 0001 3 2 0002 0001 0002 0003 0002 2 3 0003 0002 0002 0004 0002 2 4 missing 0001 missing missing 0001 1 Any help you can provide would be greatly appreciated!
... View more
