(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 ____________________________________________________________________________________ Luggage? GPS? Comic books?
You have to read the data into an object: e.g.,
mydata <- read.delim("Filename.txt", header=TRUE)
and then you can access the data with 'mydata'. If you had
"test" as a
column header,then
mydata$test
will access that data.
On 7/3/07, Susie Iredale <skewsie@yahoo.com>
wrote:>
>
>
>
> (Repeat of previous HTML version)
>
> Hello all,
>
> I am a new R user and I have finally imported my data using
> >read.delim("Filename.txt", header=TRUE) after some
difficulty, by
> changing file directories (a hint to anyone who might be stuck there).
>
> However, I am now stuck trying to use my data. When I try to use
> data.frame("filename.txt") it tells me object not found, which
makes it
> difficult to use attach() or with(). How do I get R to recognize my data?
>
> Thanks,
> Susie
> PhD Student UCI
>
>
>
>
>
>
____________________________________________________________________________________
> Luggage? GPS? Comic books?
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem you are trying to solve?
[[alternative HTML version deleted]]
Actually, I believe attach() and detached() is discouraged nowadays...
x <- read.delim("Filename.txt", header=TRUE)
You can access your data by column:
x[,1]
x[,c(1,3)]
or if your first column is named "Col1" and the third
"Col3",
x[,"Col1"]
x[,c("Col1","Col3")]
and you can do the same to access by row - by indices or rownames [which you
can set with "rownames<-", see help("rownames<-")]
Alternatively, with this type of data [created by the read.delim() function]
you can also access with the following syntax:
x$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
>
>
>
>
>
>
____________________________________________________________________________________> Luggage? GPS? Comic books?
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>