[R] Confusing error statement

[David Winsemius]

On Oct 22, 2010, at 9:22 AM, Kurt_Helf at nps.gov wrote:

> Greetings
>     Using the following command I've been trying to subset a  
> dataframe of
> counts of an organism to compute the sizes of groups for use as a
> predictor:
>
> Hs.patches <- as.data.frame(with(Hs.long,
>      table(Cave,Year,Month,Region,Plot,)))

Not really sure what you intended. Did you want a contingency table in  
long format or a subset:

If the first, then perhaps:

Hs.patches <-with(Hs.long, as.data.frame(
                     table(Cave,Year,Month,Region,Plot,)))

(There is also an equivalent as.data.frame.table function.)

-- 
David.

>
> I am getting the following error message that I do not understand:
>
> ERROR:  argument is missing, with no default
>
> Can anyone shed light on this and suggest a possible fix?
> Cheers
> Kurt
>
> ***************************************************************
> Kurt Lewis Helf, Ph.D.
> Ecologist
> EEO Counselor
> National Park Service
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David Winsemius, MD
West Hartford, CT