help - extract data using column names
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On Tue, Oct 30, 2012 at 7:09 AM, alex_123 <deepak.juit at gmail.com> wrote:
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 1.88298265 0.09614617 0.6282549 -0.5705269
20 0.6347834 -0.36977583 0.63255683 1.3200687 -0.5705269
I want to extract data with unique name of column , by "Mi","RBF" etc . I
have stored character vector of desired column names. eg aa =
c("Mi","RBF",..)
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