Displaying 1 result from an estimated 1 matches for "tp3454646p3455077".
2011 Apr 16
3
if else statements in data frame
Dear R experts, I have again a problem. Let I have a data frame like below:
x y
----------
A A
A B
B B
A B
where x and y are the column names. I want to create a new column z where it
is elements
will be like that, if at each row has there at least one 'B', then z will
have value of B, if not then Z will
have missing value(NA) for the corresponding row. So my result data frame
should be