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alex323
2012 Oct 30
4
help - extract data using column names
hello , I am new user in R . I have datafile (class = data.frame) which has
825 columns with unique column name i want extract 200 selected column from
datafile how can I do this?
my datafile look like..
Mi RBN RBF nDB nX
3 2.6225979 0.53132756 -0.80599902 -1.4471864 -0.5705269
10 0.4818746 -1.72143092 -2.19579027 2.0118824 -0.5705269
12 2.8519611