Re: [R] help - extract data using column names

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[R] 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 RBFnDB nX 3 2.6225979 0.53132756 -0.80599