[R] How to use the paste function to create an already used variable

[Duncan Murdoch]

On 24/03/2010 9:25 AM, Tal Galili wrote:
> Try:
>
> for (i in 1:4) {
> Data <- eval(parse(text =  paste("data",i,sep="")))
> ...
> ..
> }
>
>
> (and if there are other solutions - I would love to know)
>   

The get() function is simpler if you're just retrieving a variable:

Data <- get(paste("data", i, sep=""))

Duncan Murdoch
>
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> 2010/3/24 "Biedermann, Jürgen" <juergen.biedermann at charite.de>
>
> > Hi there,
> >
> > I have the following problem
> >
> > Four data frames exist:
> >
> > data1
> > data2
> > data3
> > data4
> >
> > Now I want to write a loop and temporarily store the data1, data2, data3,
> > data4 in a variable called data.
> > I tried the following...
> >
> > for (i in 1:4) {
> > Data <- paste("data",i,sep="")
> > ...
> > ..
> > }
> >
> >
> > but it doesn't function. I think the problem is the definition of the mode
> > of the pasted variable.
> >
> > Could anyone help me?
> > Thanks
> >
> > Greetings
> > Jürgen
> >
> > ______________________________________________
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