[R] Moving from Splus to R: irregular and regular time series

[Isabelle BRAUD]

Dear R developpers,


I am a user of Splus since many years and I have developped lots of 
functions to plot graph of data and model results of irregular or 
regular times series.

In Splus regular times series are created using the rts function and 
irregular time series using the its functions. In both cases, times is 
given as a numeric vector.

There is no problem in plotting a regular and an irregular time series 
on the same graphs using the ts.plot function.


I am now trying to move to R, as it is a free software, so that it is 
very easy to install it for students.

However, I have problems in finding the functions in R which would 
enable me to do the same type of graphs as before.

I have downloaded the its and tseries packages, but in tseries time is 
numeric and in its time is provided as POSIXct or lt objects. I have the 
filling that both packages have been developped separately and I don't 
see how I could specify time to be able to plot regular and irregurlar 
time series on the same graph --- if it is possible in R--.


Thanks in advance for your answer

Best regards

Isabelle

-- 
Isabelle BRAUD
Cemagref
Unité de recherche Hydrologie-Hydraulique
3bis quai Chauveau
CP 220
69336 Lyon Cédex 9
Tel: 04 72 20 87 78
Fax: 04 78 47 78 75
E-mail: isabelle.braud at cemagref.fr