# [R] (no subject)

jim holtman jholtman at gmail.com
Tue Apr 24 12:16:44 CEST 2007

```Are you trying to create a 'list' of the subsets?  If so, try:

L=as.numeric(levels(factor(don\$Id_Cara)))
donC <- list()
for(i in L){
donC[[i]] <- subset(don, Id_Cara == i, select = c( Id_TrT1,
Id_Geno, Id_Rep, Val_O))
print(donC[[i]])
}

Or better using the 'names' of the factors

L <- levels(factor(don\$Id_Cara))
donC <- list()
for(i in L){
donC[[i]] <- subset(don, Id_Cara == i, select = c( Id_TrT1,
Id_Geno, Id_Rep, Val_O))
print(donC[[i]])
}

On 4/24/07, elyakhlifi mustapha <elyakhlifi_mustapha at yahoo.fr> wrote:
> I wanna display some data which there are subsets of a dataframe called "don" but there are errors like this
>
> > L=as.numeric(levels(factor(don\$Id_Cara)))
> > for(i in L){
> + donC(i)=subset(don, Id_Cara == i, select = c( Id_TrT1, Id_Geno, Id_Rep, Val_O))
> + donC(i)
> + }
> Erreur dans donC(i) = subset(don, Id_Cara == i, select = c(Id_TrT1, Id_Geno,  :
>        impossible de trouver la fonction "donC<-"
>
> I understand that the problem comes from the third line
>
> it doesn't reconize "donC(i)" but  it's very important to make one "boucle" (in french) on the L's elements.
>
> to tell more about L :
>
> > L
> [1] 103 137 138 177 193 308
>
>
>
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--
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

```