[R] how to create data.frame with dynamic count of values

[Don MacQueen]

I don't understand what you're asking for.

But if your goal is to create N1 through N15 in order to use them to 
fill a data frame, then it can be much simpler:

items <- 15
VarSize <- 10

tmp <- matrix(0,nrow=VarSize,ncol=items)
tmp <- data.frame(tmp)
names(tmp) <- paste('N',seq(items),sep='')

## of course, this next only works if VarSize <= length(letters)
tmp$X1 <- letters[1:VarSize]

You could instead start with

tmp <- matrix( rnorm(VarSize*items) , nrow=VarSize , ncol=items)

-Don

At 5:17 PM +0100 12/8/06, Knut Krueger wrote:
>Hello R-Group
>
>I found how to fill the data.frame ->
>http://finzi.psych.upenn.edu/R/Rhelp02a/archive/70843.html
>
>N1 <- rnorm(4)
>N2 <- rnorm(4)
>N3 <- rnorm(4)
>N4 <- rnorm(4)
>X1 <- LETTERS[1:4]
>###################
>nams <- c(paste("N", 1:4, sep = ""), "X1")
>dat <- data.frame(lapply(nams, get))
>names(dat) <- nams
>dat
>
>
>But I need also to create a dynamic count of numeric vectors
>items = 15
>VarSize <-10
>
>N1 <- rep(0,VarSize)
>N2 <- rep(0,VarSize)
>N3 <- rep(0,VarSize)
>N4 <- rep(0,VarSize)
>N5 <- rep(0,VarSize)
>...
>N15<- rep(0,VarSize)  # 15 items
>
>
>Thank you in advance
>Knut
>
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-- 
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA