R help - Mar 2009 - how to do trend.test for subset data

Dear:

I try to do the trend.test {pastecs} for a subset data. Anyone have this
experience?

Many thanks!

Xin

That question seems too vague to be answered. There should be no  
problem in doing such. Do you have a problem that you are encountering?

-- 
David Winsemius
On Mar 24, 2009, at 10:52 AM, Xin Shi wrote:
> Dear:
>
> I try to do the trend.test {pastecs} for a subset data. Anyone have  
> this
> experience?
>
> Many thanks!
>
> Xin
>
>
>
>
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David Winsemius, MD
Heritage Laboratories
West Hartford, CT