Sorry, didn't mean to make you mad...
unfortunately, at the moment i don't think i can afford it,
and in my university library there are no books concerning R...
Anyway, I'm sorry if I'm bugging you with the questions...
(actually, I even tried to install today one library which I think was
written
by you..."tree")...anyway it didn't work, so I suppose that speaks of my
niveau..Too bad there is no mailing list for a real R beginers...
I'm kidding,
best regard,
anyway, thaks for the answers,
ana
[not to R-Help - you already forwarded Brian's message to r-help which
was private!]
Ana,
in your library are no books concerning R? The two books from Venables
and Ripley are very famous and "Modern Applied Statistics with S" ist
the best sold Springer book in Statistics, AFAIK. So it's your turn make
a suggestion to the library people to buy it!
The book
Breiman, Friedman, Olshen, and Stone (1984):
Classification and Regression Trees. Wadsworth.
is THE book defining CART (and therefore the similar implementation of
rpart, which was implemented by Terry M Therneau and Beth Atkinson at
Mayo - there was a Technical Report on this, AFAIK).
Anyway, there are some manuals coming with R, for a beginner: "An
Introduction to R", "R Data Import/Export", ans "R Language Definition".
Also, reading the FAQs is a good idea.
Since all people answering mails on R-help are volunteers, they don't
want to answer extremly basic questions that are obvious from reading
the manuals.
Your idea to type in rpart was OK. Better idea: Look in the package
structure of the package sources and look for the relevant file *.R with
R Code, and *.c, *.f for the C and Fortran sources that are the basic of
the DLL which the R Code uses.
Uwe Ligges