On Jul 5, 2012, at 11:22 AM, R. Michael Weylandt wrote:
It is possible to put dimensionality on a list (i.e., a generic
vector), which might be what you're looking for.
x <- list(1:4, letters[1:4], function(x,y) x + y, rnorm(50))
dim(x) <- c(2,2)
x[[1,2]]
x[[2,2]]
x[[3,2]] # Error
That constructs a 2 x 2 matrix whose elements are lists:
> x
[,1] [,2]
[1,] Integer,4 ?
[2,] Character,4 Numeric,50
> is.matrix(x)
[1] TRUE
I suppose one could take that approach to constructing an Excel-mimic,
since the functional element survives that passage:
> x[1,2][[1]](3,4)
[1] 7
Best,
Michael
On Thu, Jul 5, 2012 at 8:19 AM, Thomas C. <thomas.csa...@gmail.com>
wrote:
hi,
i'm trying to figure out if there's any possibility to write a
whole vector
into a matrix or data.frame or something like that. i don't mean
transormation. Here an example:
[,1] [,2]
[1,] "a" "d"
[2,] "b" "e"
[3,] "c" "f"
where e.g. a is a<-c(0,1) vector of length 2, b a vector of length
4,... (i
know that the matrix enties are strings :)). i'm trying to put some
variables into a matrix or data.frame, but i couldn't handle it. is
something like that possible in R?
The matrix classes objects loose their names, however. You will not
have a,b, ... as handles in that matrix. You could create row and
column names.
thanks for your help!
David Winsemius, MD
West Hartford, CT
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