Exactly what you want to do with these different timescales? If it's just a case of sticking two lines on the same graph, that's simple. If it's some multi-temporal statistic (is there such a thing?) that you know of but isn't in R, then just code it up as an R function.

Can you give us clarification? What are the statistic/statistics you want to calculate to compare your time-series?

Robert 

On 9/23/06, Phil Henshaw <[EMAIL PROTECTED]> wrote:
Who would guess just asking the R help forum would turn up a grad med student whose PhD in modeling time series of epidemics with R, living around the corner!     I guess I'm now officially one small step up from rank beginner...    Anyway, it doesn't appear that R makes it at all easy to use data with arbitrary time scales, however, which is disappointing.    I just want a graphing database that other systems researchers use that treats time as a real number.   Is that too much to ask??     R's time-series objects appear to require orderly data with points at constant time periods, and can't relate to others with different periods...   My data and issues  tend to fail on both counts!    
 
The session did give me a whole bunch of names of other people working on non-parametric data imaging, so I'll bet someone somewhere deals directly with the underlying problem, i.e. that life most certainly happens, but just not on schedule!     I've gotten more than a couple great suggestions on FRIAM!    Any others? 
 

Phil Henshaw                       ¸¸¸¸.·´ ¯ `·.¸¸¸¸

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