R help - Jul 2005 - tapply t.test

I cannot find in the literature a way to conduct the following t.test
on 2 objects, A and B

A                                       B
col1 col2 col3                  col1 col2  col3

Where col(i)'s name is identical in both A and B (they are names of
tissues).

How do I test (t.test) if each tissue across the object is
signifanctly different?? (i'm pretty sure I have to use tapply())


Also is there a way to multi plot all 89 tissues showing the A values
and the B values..

thank you

List,
 
Can anyone point me at a user guide for doing signals processing after applying
the FFT?

I'm looking for some info on postprocessing steps, trying to see if there
are any packages already written, etc.
 
TIA,
 
Pete

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