[R] Were to find appropriate functions for a given task in R

[Dimitris Rizopoulos]

you may find RSiteSearch() and help.search() functions useful for this 
purpose, considering usually different key words for the same topic.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://www.med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Albert Sorribas" <albert.sorribas at cmb.udl.es>
To: <r-help at stat.math.ethz.ch>
Sent: Wednesday, April 26, 2006 5:31 PM
Subject: [R] Were to find appropriate functions for a given task in R


This is a generic request concerning were to look for finding
appropriate information on a precise procedure in R.
I'm using R for teaching introductory statistics and my students are
learning how to deal with it. However, I find it difficult to locate
some of the procedures. For instance, for basic crosstabulation, it is
obvious that basic functions as table, ftable, and prop.table can be
used. But there is a CrossTable function that is very useful. This is
hidden in gmodels and gregmisc, as far as I've been able to explore 
the
packages. However, there is no way (unless I sit down to r-help for
hours) to be sure if there is some other place in which a very useful
function is hidden for table manipulation (for instance controlling 
for
other variables). This is only an example. But there are many more. 
Were
to look for CI for proportions? I can find it but it is not easy.

I understand R is more appropriate for difficult statistical 
procedures
(glm and similar), BUT students need to start somewhere..

My specific claim is about the need for a sort of guide in which the
different procedures could be classified (and some redundancies could 
be
deleted...by the way). Is there something similar around? Any project
working on this? Any clue for?

If not, I would suggest starting some kind of easy reference based on
the problem to solve. This could indicate were to look for. Last day I
find in package vcd that a function exist for testing the
goodness-of-fit of a sample to binomial and other distributions..but
this was VERY difficult to locate.

Any way, as usual, any indication will be very useful (spaecially for 
my
students!!!)



Albert Sorribas
Professor of Statistics and Operational Research
Departament de Ciències Mèdiques Bàsiques
Universitat de Lleida
Montserrat Roig 2
25008-Lleida (Espanya)
web.udl.es/Biomath/Group



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