Dear John,

Assuming that your information is in the list x, does

substr(x,1,2)

work for you?

HTH,

Jorge


On Mon, Jun 2, 2008 at 10:07 PM, john.polo <jpolo@mail.usf.edu> wrote:

> hello all,
>
> i want to split a list into smaller lists. the list looks like this:
> CW-W730  CW-W720  CW-W710  CW-W700  CW-W690  CW-W680  CW-W670  CW-W660
> CE-W997  CE-W987  CE-W977  CE-W967  CE-W956  CE-W944  CE-W934  CE-W924
> 7W-W760  7W-W750  7W-96    7W-941   7W-932   7W-923   7W-914   7W-905
>  7E-W565  7E-W555  7E-W545  7E-W535  7E-W525  7E-906   7E-850   7E-840 ...
>
>
> i want the smaller lists to be based on the first two characters, like CW
> or 7E. i tried split() where the f variable =
> c("1E-*","1W-*","2E-*","2W-*","5E-*","5W-*","7E-*","7W-*","CE-*","CW-*"),
> but * doesn't work as a wildcard as i had hoped. can someone tell me the
> appropriate wildcard character/symbol to use, please?
>
> john
>
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