Can anyone help me solve this problem...thanks! Consider a data frame, namely v, as such: > v X1 X2 X3 X4 X5 X1 X2 X3 X4 X5 x1 1 2 -1 -1 -1 1 2 -1 -1 -1 y1 1 2 -1 -1 -1 1 2 3 -1 -1
What I would like to do is to create an array or data frame with only the elements that appear in the data frame more than once and are >= 0. I try this... > v[v>=0] [1] 1 1 2 2 1 1 2 2 3 which returns all >= 0 elements, but they are not in their respective rows from the original data frame. I have tried using the duplicated() function and can't seem to get it to work correctly. Essentially, the outcome I am trying to get is a df or array looking like: step 1...achieve this out of original df [1] 1 2 1 2 [2] 1 2 1 2 3 (the blank element in row 1, position 5 can be just be NA) step 2...take the above and get this...only the duplicated elements [1] 1 2 [2] 1 2 -- View this message in context: http://www.nabble.com/extracting-duplicated-elements-tf4318034.html#a12295213 Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.