




Dear Isabelle,

for most of my work I have switched from S-Plus to R, because it is
easier to make scripts with due to the better documentation and some
other more reasonable implementations. And there was also a cost
issue with the S-Plus Server, which is not for free at all.
In R I use the its package for time series, which is quite sufficient
for my needs. The only problem I encountered was with computing time.
So I use R  matrixes as long as possible and not the its (S4)
objects, since this makes some commands very slow (like union).
There are also other packages like zoo, tsseries (I guess) and
certainly Rmetrics, which should have all you need

Most functions transform directely and easily. Among others, I missed
the numRows() and numCols() etc in R, but this can be redone quickly.

One big advantage of S-Plus is the possibility to edit graphics and
to make Powerpoints presentations very quickly. Also the Excel
interface is already build  in. In R you must always programm to
whole picture, which is ok if you are doing the same task often.

Best regards,
Stefan

-------------------------------------------------------
Dr. Stefan Albrecht, CFA
Allianz Private Equity Partners GmbH
Giselastrasse 4
D-80802 Munich, Germany
Phone +49.89.38 00 - 18 317
Fax +49.89.38 00 - 818 317


Dear collegues,

I am using S-Plus for many years and is thinking of moving to R.
In the FAQ I did not manage to find an answer to the following
questions:
Is it easy to move and transform functions, written under S-plus to
functions under R?

Furthermore, S-Plus has interesting functions to deal with regular
and
irregular times series (rts, its, ts.plot, ts.lines, ts.points,
aggregate.rts, etc..) and the possibility to plot, on the same
graphic,
regular time series with different frequencies and even irregular
time
series. Is it still possible in R?

Thanks in advance for your answers.
Best wishes
Isabelle Braud
***************************************************************
Isabelle BRAUD
Chargée de recherche au LTHE-Grenoble/CEMAGREF-Lyon

CEMAGREF
Unité de Recherche Hydrologie-Hydraulique
3 bis, Quai Chauveau, CP 220
69336 Lyon Cedex 9

Tel: 04 72 20 87 78 (from abroad 33 4 72 20 87 78)
Fax: 04 78 47 78 75 (from abroad 33 4 78 47 78 75)
E-mail: braud at lyon.cemagref.fr
            ou Isabelle.Braud at hmg.inpg.fr
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