[R] Replace / with - in date

prem_R mtechprem at gmail.com
Thu Apr 15 19:51:20 CEST 2010

Hi,every one .I have searched the solutions in the forum  for replacing my
date value which is in a data frame  ,01/01/2000 to 01-01-2000 using replace
function but got the following warning message

Warning message:
In `[<-.factor`(`*tmp*`, list, value = "-") :
  invalid factor level, NAs generated

Is there any other method of doing it? or am i missing something?. please
let me know if you need any more information.


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