[R] Were to find appropriate functions for a given task in R
Albert Sorribas
albert.sorribas at cmb.udl.es
Wed Apr 26 18:33:10 CEST 2006
Thanks for the indications. All these suggestion will help a lot. The
TINN-R application is impressive.
However, I think something more PROBLEM directed is needed. I agree that
Google and the ?RSiteSearch helps a lot, but yet the explanations (like
this discussion) are not clear enough in many cases. Any way, this is my
impression as a technical user. The R stuff is really good, but it is
difficult to find what you need in many instances. Then, people tend to
define its own functions (I'm doing this too), and a lack of
standardization makes it difficult to keep everything into control.
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
-----Mensaje original-----
De: Gabor Grothendieck [mailto:ggrothendieck at gmail.com]
Enviado el: miércoles, 26 de abril de 2006 17:47
Para: Albert Sorribas
CC: r-help at stat.math.ethz.ch
Asunto: Re: [R] Were to find appropriate functions for a given task in R
There is a reference sheet here:
http://www.rpad.org/Rpad/R-refcard.pdf
a function finder here:
http://biostat.mc.vanderbilt.edu/s/finder/find.html
and task views here:
http://cran.r-project.org/src/contrib/Views/
Also use of RSiteSearch and help.search from within R
can be helpful.
On 4/26/06, Albert Sorribas <albert.sorribas at cmb.udl.es> wrote:
> 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
>
>
>
> [[alternative HTML version deleted]]
>
>
>
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