[R] difficult R-problem

[Torsten Hothorn]

> Hi there
> 
> In the course of my diploma thesis in climatology I have encountered
> 
> a difficult R-Problem that I cannot solve. I want to fill R-Objects
> 
> (whose names should depend on j) with numbers at the i-th position.
> 
> The resulting Objects should be something like:
> 
> RQuadratStep1, RQuadratStep2, RQuadratStep3 ... filled with Elements like

you may want to use lists: 

mylist <- list()

for (j in 1:10)
  mylist <- c(mylist, list(rnorm(10)))

and

> mylist[[5]]
 [1]  1.0530570  0.4205237 -0.7135633 -0.1252135 -0.2001246  2.1129394
 [7] -1.8155177  1.2549754 -1.1938755  0.3253695

is an ordinary vector

> mylist[[5]][1]
[1] 1.053057

Torsten



> 
> c(0.324, 0.456, 0.657 ...)
> 
> Below is a short version of how I have tried to solve it but I don't
> 
> know how to insert numbers at the i-th place. The problem seems to be
> 
> the "assign" line. Thanks a lot for all hints.
> 
> for(j in 1:10) {
> 
>   for(i in 1:30)  {
> 
>     fit<-lm(annJMSLTv.box~.,data=data.frame(annJMSLTv.box=annJMSLTv.box[,i],allTreerings[,1:15])
> 
>     backfit<-step(fit,trace=F,steps=1)
> 
>     assign(eval(parse(text=paste("RQuadratStep",j,sep=""))),round(summary(fit)$r.squared, dig=3))
> 
>   }
> 
> }
> 
> 
> 
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