[R] subsetting character vector into groups of numerics

[Patrick Connolly]

I'm sure there's a simple way to do this, but I can only think of
complicated ones.


I have a number of character vectors that look something like this:

"12 78 23 9 76 43 2 15 41 81 92 5(92 12) (81 78 5 76 9 41) (23 2 15 43)"

I wish to get it into a list of numerical vectors like this:

$Group
[1] 12 78 23 9 76 43 2 15 41 81 92 5

$Subgroup1
[1] 92 12

$Subgroup2
[1] 81 78 5 76 9 41

$Subgroup3
[1] 23 2 15 43

I can't rely on the closing parenthesis as the last character in the
vector, though the subgroup could be clearly defined without it.
Numbers are obvious to the eye, but are not always separated from one
another consistently.  Part of the reason for this exercise is to
check that the Group is made up of the Subgroups with no elements
missing, so getting Group is not simply a matter of concatenating the
subgroups.


Ideas appreciated.



-- 
Patrick Connolly
HortResearch
Mt Albert
Auckland
New Zealand 
Ph: +64-9 815 4200 x 7188
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