[R] joining matrices, vectors, scalars in one object

From: Gonšalo Ferraz <gferraz29_at_gmail.com>
Date: Thu, 13 Mar 2008 09:04:11 -0400


I have:

a <- matrix(c(0,1,0,1),nrow=2)
b <- matrix(c(1,1,1,0,0,0),nrow=3)
c <- 1
d <- c(1,0,1)

And I would like to join them in an object 'thing' so that I can access a, b, c, or d through an index in a for loop.

For example:
would return
[1] 1 0 1

Note however, that I have many of these 'thing' components. So many that a command like

thing <- list(a = matrix(c(0,1,0,1),nrow=2), b = matrix(c (1,1,1,0,0,0),nrow=3), c = 1, d = c(1,0,1))

would become long and awkward.

Is there a way of declaring an empty 'thing' of a given length and then assigning its elements from a for loop? I need to allow elements a, b, c... that can be scalars, vectors or matrices with varying dimensions.



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