Loop on vector name
Others have answered the question that you asked (it is also a variation of Faq 7.21), but here is an answer to the question that you should have asked: When working with datasets like this, it is better to create a list rather than separate objects with names like dat1, dat2, etc. For example:
mydat <- list(dat1=rnorm(10), dat2=rnorm(25), dat3=runif(100))
Now your loop can be:
for(i in 1:3) cat( sd( mydat[[i]] ) )
Or even simpler:
sapply( mydat, sd )
And when you are through with the data, you only need to delete one object, or copy one object, or save one object, etc. Hope this helps,
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
project.org] On Behalf Of Megh Dal
Sent: Wednesday, September 17, 2008 5:51 AM
To: r-help at stat.math.ethz.ch
Subject: [R] Loop on vector name
[My previous message rejected, therefore I am sending same one with
some modification]
I have 3 vectors with object name : dat1, dat2, dat3
Now I want to create a loop, like :
for (i in 1:3)
{
cat(sd(dati))
}
How I can do this in R?
Regards,
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