R help - Apr 2011 - Reorder a data frame according a column randomly reordered.

Hello all , 
I have a data frame like this 

X1X2X3
11815
22916
331017
441118
551219
661320
771421

now i want to randomly reorder the variable X2  but the row element should be
same 
as for example 

X1X2X3
12916
251219
331017
471421
561320
61815
741118

how can i do that ??

Hint : 
this could be helpful : 

if X2 is only a vector like this 
X2<-c(8,9,10,11,12,13,14)

so i can easily reorder it by using sample commend 
sample (X2 , size=length(X2), replace=FALSE)
 
may be i have to use lapply commend with sample commend .


/.......Tanvir Ahamed

	[[alternative HTML version deleted]]

On 18.04.2011 17:04, Mohammad Tanvir Ahamed wrote:
> Hello all ,
> I have a data frame like this
>
> X1X2X3
> 11815
> 22916
> 331017
> 441118
> 551219
> 661320
> 771421
>
> now i want to randomly reorder the variable X2  but the row element should
be same
> as for example
>
> X1X2X3
> 12916
> 251219
> 331017
> 471421
> 561320
> 61815
> 741118
>
> how can i do that ??
>
> Hint :
> this could be helpful :
>
> if X2 is only a vector like this
> X2<-c(8,9,10,11,12,13,14)
>
> so i can easily reorder it by using sample commend
> sample (X2 , size=length(X2), replace=FALSE)
>

Yes, and then replace X2 with your reordered X2.

Uwe Ligges




> may be i have to use lapply commend with sample commend .
>
>
> /.......Tanvir Ahamed
>
> 	[[alternative HTML version deleted]]
>
>
>
>
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