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2009 Aug 13
2
How to rename columns that start with numbers?
Hello, My dataframe has new columns that start with the number 1 or 2 (resulting from a reshape cast command). Instead of having these columns automatically renamed by R so start with the letter X, I would like to rename these columns to start with the characters "SURV_" (e.g., SURV_1, SURV_2). I can't seen to use grep() to identify and rename the columns starting with either 1 or