Exactly what are you trying to do?  Are you trying to just change a subset
of the values?  'subset' does not have an 'assignment' operator.  Maybe you
want something like this (but it is not clear from your description.  Also
it is not clear if you have exactly the same set of matching values in the
two data frames for the subset conditions.  If you do, then this might work:

data1[(data1$Subject==25) & (data1$Session==1), 22] <-
data2[(data2$Subject==25)&(data2$Session==1), 23]

On Tue, May 19, 2009 at 3:50 PM, tsunhin wong <thjwong@gmail.com> wrote:

> Dear R users,
>
> I have 1 data.frame of 1500x80 - data1. I found out that there are a
> few cells of data that I have misplace, and I need to fix the ordering
> of them.
> In an attempt trying to swap column 22 & 23 of the Subject with
> misplaced data, I did the following:
> > data2 <- data1
> > subset(data1,(Subject==25 & Session==1))[,22] <-
> subset(data2,(Subject==25 & Session==1))[,23]
> > (error messages... "Could not find function "subset<-")
> > subset(data1,(Subject==25 & Session==1))[,23] <-
> subset(data2,(Subject==25 & Session==1))[,22]
> > (error messages... "Could not find function "subset<-")
>
> Please, please point me to some ways to achieve the swapping.
> Thanks a lot!
>
> Cheers,
>
>     John
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>



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

What is the problem that you are trying to solve?

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