[R] Problems using imported data

[Stephen Tucker]

Actually, I believe attach() and detached() is discouraged nowadays...

x <- read.delim("Filename.txt", header=TRUE)

You can access your data by column:
x[,1]
x[,c(1,3)]

or if your first column is named "Col1" and the third "Col3",
x[,"Col1"]
x[,c("Col1","Col3")]

and you can do the same to access by row - by indices or rownames [which you
can set with "rownames<-", see help("rownames<-")]

Alternatively, with this type of data [created by the read.delim() function]
you can also access with the following syntax:
x$Col1
x$Col3
with(x,Col1)
with(x,cbind(Col1,Col3))

...hope this helps

ST


--- Susie Iredale <skewsie at yahoo.com> wrote:

> 
> 
> 
> (Repeat of previous HTML version)
> 
> Hello all,
> 
> I am a new R user and I have finally imported my data using
> >read.delim("Filename.txt", header=TRUE) after some difficulty, by changing
> file directories (a hint to anyone who might be stuck there).
> 
> However, I am now stuck trying to use my data.  When I try to use
> data.frame("filename.txt") it tells me object not found, which makes it
> difficult to use attach() or with().  How do I get R to recognize my data? 
> 
> 
> Thanks,
> Susie
> PhD Student UCI
> 
> 
> 
> 
>      
>
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