[R] write.csv changes the format of the date

[jim holtman]

works fine on 2.11.1 Windows:

> x <- structure(list(Last_Successful_Run = structure(1L, .Label = "30/10/2010",
+ class = "factor")), .Names = "Last_Successful_Run", class = "data.frame",
+ row.names = c(NA,
+ -1L))
> x
  Last_Successful_Run
1          30/10/2010
> str(x)
'data.frame':   1 obs. of  1 variable:
 $ Last_Successful_Run: Factor w/ 1 level "30/10/2010": 1
> write.csv(x, file='x.csv')
> z <- read.csv('x.csv')
> z
  X Last_Successful_Run
1 1          30/10/2010
>

Your data is a 'factor' so it should not be doing any date conversion.

On Mon, Nov 1, 2010 at 9:14 AM, Santosh Srinivas
<santosh.srinivas at gmail.com> wrote:
> Dear Group,
>
> Why does write.csv modify the date format when it write to a file.
>
> I have the following variable Param_Dat:
>
> dput(Param_Dat)
> structure(list(Last_Successful_Run = structure(1L, .Label = "30/10/2010",
> class = "factor")), .Names = "Last_Successful_Run", class = "data.frame",
> row.names = c(NA,
> -1L))
>
>
> When I do:
> write.csv(Param_Dat,"Param.csv",quote=F,row.names=F)
>
> The format of the info in the file is:
> Last_Successful_Run
> 31OCT2010
>
> I want to retain the dd/mm/YYYY format ...
>
> Please advise.
>
> ----------------------------------------------------------------------------
> --------------------------
> Thanks R-Helpers. Yes, this is a silly question and it will not be repeated!
> :-)
>
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>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?