[R] Creating loops with strings

[Duncan Murdoch]

On 22/09/2009 4:50 PM, Rakknar wrote:
> Hello. I'm trying to run a series of commands in two different datasets. For
> make it efficient I want to make a loop for it. Until now the only command
> for loops i found it's the for() command it's only for series of numbers and
> not a series of strings, 


What gave you that idea?  A for loop can loop over any vector.


witch it's what i'm needing. It would be something
> like this
> 
> for(i in dataset1 dataset2) {

Use

for (i in c("dataset1", "dataset2"))

to set i to each of those strings in turn.

>             i <- read.dta("dataset1.dta")
>             ls()
>             summary(i)
>             str(i)
>             attach(i)
>             }

None of the above will work, but it's almost all a bad idea anyway.

Duncan Murdoch

> 
> I hope the idea it's clear. I'm using 2.9.1 Windows Version of R.
> 
> Thanks.