Dear R-users, I would like a suggestion. I have two time series covering the period 1000-2000 a.D. and I would like to understand if there are some time significant correlations between them. Samples in the first time series are quite compact because about a sample per year is available. The second one is a time serie where values are quite sporadic, i.e. there is a value every 20-50 years. Which is the best way to procede? How to compare them? I tried to consider average values over the same time interval (e.g. 100 years) and running averages (es. time intervals of 100 years shifted by 20 y). I think that running average over overlapping intervals can influence correlation. How to consider the significativity of my test? Thank You very Much Michela Rosso --------------------------------- --------------------------------- [[alternative HTML version deleted]]