[R] (no subject)

[ruipbarradas at sapo.pt]

Hello,

What do you want to sample? Rows? With or without replacement? You  
need to give us more information on what you want.

Start by seeing the help page for ?sample

Hope this helps,

Rui Barradas
 

Citando MARYAM <firoozi_maryam6858 at yahoo.com>:

> Dear mr/madam
> I have 3 matrix with 20 rows and 3 columns like this: I want to  
> sample randomly from three matrix and put it in a vector.How can i  
> do that?
>
> Young.list1<- matrix(NA,nrow= 20,ncol=3)
> Young.list1[,1]<- 1:20
> Young.list1[,2]<- 0.6
> Young.list1[,3]<- 500
> colnames(Young.list1)<- c("ID","r","EBV")
> ###########################################
> Young.list2<- matrix(NA,nrow= 20,ncol=3)
> Young.list2[,1]<- 21:40
> Young.list2[,2]<- 0.7
> Young.list2[,3]<- 600
> colnames(Young.list2)<- c("ID","r","EBV")
> ###########################################
> Young.list3<- matrix(NA,nrow= 20,ncol=3)
> Young.list3[,1]<- 41:60
> Young.list3[,2]<- 0.8
> Young.list3[,3]<- 700
> colnames(Young.list3)<- c("ID","r","EBV")
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>
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> minimal, self-contained, reproducible code.

 

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