Message-ID: <971536df05080804361ad255c6@mail.gmail.com>
Date: 2005-08-08T11:36:33Z
From: Gabor Grothendieck
Subject: R: cbind
In-Reply-To: <42F73454.49841D8A@STATS.uct.ac.za>
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