[R] Count missing variables in dataset
Jan Sabee
jan.sabee at gmail.com
Mon Mar 21 12:07:16 CET 2005
I have a problem about how to count missing variables in dataset.
I have a question for my customer. They are must choice one of answer
for example: A, B, C, D and E.
Now, I have dataset which is the result from my question, for instance:
x1 x2 x3 x4 x5
A A A B A
C A A A A
B B A B A
B B B C A
A B B B B
C B B B A
I know that my customer only choice A, B and C.
Are there any way to count variables that are not include in dataset.
I mean D and E is missing in dataset.
Thanks for your help.
Jan Sabee
More information about the R-help
mailing list