Dear ALL R Experts, I have a time series and I want to detect presence of seasonality in this time series. I know the method of plotting the Autocorrelation function(acf) and if there are significant lags after period s,2s,3s,... then s is the period for the time series. But my problem is instead of plotting the ACF function, I need to automatically test the presence of seasonality. How this could be done?? Since I have many time series, I need to automate this function which would detect the presence of seasonality along with the period. Is there any package readily available which could do this?? Or there is anyway to do this. Any help would e greatly appreciated Thanks in advance -- View this message in context: http://r.789695.n4.nabble.com/How-to-identify-seasonality-in-time-series-data-tp2165031p2165031.html Sent from the R help mailing list archive at Nabble.com.