Dear R Users,
Given two vectors, say a = seq(2) and b = seq(3), I want to make an 2*3 array,
where (i,j) element is list(a=a[i], b=b[j]). I tried the outer() function but
it generates an error message that I don't understand, see below.
What do I do wrong?
The expan.grid function is not good enough since I need a solution that works
when a and b are not atomic, say a=list(list(x=1, y=2), list(x=2, y=1)).
Thanks,
Vadim
> a <- seq(2); b <- seq(3)
> outer(a, b, function(a, b) list(a=a, b=b))
Error in dim(robj) <- c(dX, dY) :
dims [product 6] do not match the length of object [2]
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