R: cbind
On 8/8/05, Clark Allan <Allan at stats.uct.ac.za> wrote:
hi all are we able to combine column vectors of different lengths such that the result appears in matrix form? e.g. a=1 b=1:3 d=1:4 then z=CBIND(a,b,d) 1 1 1 2 2 3 3 4 i stil want the following! z[,1]=1 z[,2]=1:3 z[,3]=1:5 i made up the name of this function. we could use "cbind" but it does not seem to allows this!
There are a number of alternatives:
# 1. just create a list
x1 <- list(a = 1, b = 1:3, c = 1:4)
# 2. create a ts object:
x2 <- do.call("cbind", lapply(x1, ts))
# 3. create a matrix from the ts object
x3 <- unclass(do.call("cbind", lapply(d, ts)))
tsp(x3) <- NULL