R help - Dec 2009 - Loop counter used in variable

Hi All,

I need to run muliple lm functions.  My independent variables are called
dataset$x1, x2, x3, x4 etc.

How can I use a loop counter variable to replace the numbers?



fit1=lm(dataset$y~dataset$x1)
fit2=lm(dataset$y~dataset$x2)
fit3=lm(dataset$y~dataset$x3)
fit4=lm(dataset$y~dataset$x4)

Thanks,
Tom
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Hi

r-help-bounces at r-project.org napsal dne 15.12.2009 00:25:10:
> 
> Hi All,
> 
> I need to run muliple lm functions.  My independent variables are called
> dataset$x1, x2, x3, x4 etc.
> 
> How can I use a loop counter variable to replace the numbers?
> 
> 
> 
> fit1=lm(dataset$y~dataset$x1)
> fit2=lm(dataset$y~dataset$x2)
> fit3=lm(dataset$y~dataset$x3)
> fit4=lm(dataset$y~dataset$x4)
I would use list for results and brackets for lm fit. Something like 
(untested)

fit<- vector("list", length=4)

for (i in 1:4) {
fit[[i]] <- lm(y~dataset[,i], data=dataset)
}

Regards
Petr



> 
> Thanks,
> Tom
> -- 
> View this message in context: http://n4.nabble.com/Loop-counter-used-in-
> variable-tp963984p963984.html
> Sent from the R help mailing list archive at Nabble.com.
> 
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