[R] dataframe question

Vadlamani, Satish {FLNA} SATISH.VADLAMANI at fritolay.com
Mon Feb 8 01:51:29 CET 2010

 Good day. Please see the code below. three_wk_out is a dataframe with columns wk1 through wk209. I want to change the format of the columns. I am trying the code below but it does not work.  I need $week in the for loop interpreted as wk1, wk2, etc. Could you please help? Thanks.

R code below
week_list <- paste("wk",c(1:209),sep="")
for (week in week_list)
        three_wk_out$week <- as.numeric(three_wk_out$week)

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