[R] Odp: create variables with indexes

[Petr PIKAL]

Hi

r-help-bounces at r-project.org napsal dne 14.07.2010 00:44:02:

> Hi, there:
> 
> Suppose I want create variables with indexes in their names, e.g., 
X_1_1, 
> X_1_2, X_1_3, ..., X_1_10,  X_2_1, X_2_2, X_2_3, .. X_2_10,..., X_10_1, 
> X_10_2, ... X_10_10. It looks like I need to use 2 indexes I and J so I 
is 
> looped from 1 to 10, and J is looped from 1 to 10. But I don't know how 
to 
> automatically produce X with these combination of indexes. Should I use 
paste 
> function? Can someone help?

I would make a character vector, which I could use in further naming 
purpose.
paste(paste("x", rep(1:10, 10), sep="_"), rep(1:10, each=10), sep="_")

But why not to use lists?

Petr

> 
> Thanks.
> 
> Yulei
> 
> 
>    [[alternative HTML version deleted]]
> 
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