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constantcolmuns
2006 Aug 24
5
Check values in colums matrix
Dear all,
I apologize if my question is quite simple.
I have a dataset (20 columns & 1000 rows) which
some of columns have the same value and the others
have different values.
Here are some piece of my dataset:
obj <- cbind(c(1,1,1,4,0,0,1,4,-1),
c(0,1,1,4,1,0,1,4,-1),
c(1,1,1,4,2,0,1,4,-1),
c(1,1,1,4,3,0,1,4,-1),
c(1,1,1,4,6,0,1,5,-1),