[R] time series

[gregory]

Hi the list,

I did not find what I was looking for in archives, thus I decide to send 
this mail.

I would like to do a regression on this kind of dataset where s1 et s2 
are values of the same variable:

time   0      15    60    240
s1      A1   B1   C1    D1
s2      A2   B2   C1    D2

I tryed in vain to use the ts package but it seems I am not able to 
create a ts object with my dataframe.


In advance thank a lot

Greg