[R] Dealing with multiple observation per time point in time series

[adschai at optonline.net]

Hi - I think this is a classic question. I'm using fCalendar time series. I have observations that have multiple instances at second level. Is there anyway to handle this in R? I can inject millisecond unit arbitrarily inside there but I don't feel it's a correct way to do. Any ideas would be really appreciated. Thank you.