R help - Feb 2009 - Model (Y) from left-censored independant variable (s)

Hi all;
I'm trying to model a response variable (Y) from one (and eventually
more...) independant left-censored variable (X*)
In other words, X* is a random variable with values 0 -> inf.

Thus, let  c=0
X*= x if x>= c
X*= c if x< c

Does anyone knows a function or package in [R] enabling to model Y from a
censored predictor X*?

Thanks for your help!

?tienne



?tienne Boucher
Stagiaire Post-Doctoral

Institut national de la recherche scientifique
Centre Eau-Terre-Environnement
490, de la Couronne, Qu?bec (Qu?bec)
G1K 9A9
Tel: 418-654-3823
etienne.boucher at ete.inrs.ca

Hi,

I'm running R version 2.8.1 on Windows and I'm having quite a lot of
trouble just to install package RODBC.

When I run command install.packages("RODBC"), the following error
message appears:

Warning: unable to access index for repository
http://cran.pt.r-project.org/bin/windows/contrib/2.8

Then it stops and doesn't install anything. I've also tried downloading
from several mirrors with no success. Is this normal? Am I doing anything wrong?

Thanks,
Joao Vaz

Hi,

Sorry, just one correction: the error message that appears is:

Warning: unable to access index for repository
http://ftp5.gwdg.de/pub/misc/cran/bin/windows/contrib/2.8


Cumprimentos,

Joao Vaz  	
Product Engineer 	
QPT Product Engineering 	
Qimonda Portugal S.A.  	


-----Original Message-----
From: Vaz Joao (QPT TO EPA) 
Sent: Tuesday, February 03, 2009 6:23 PM
To: 'r-help at r-project.org'
Subject: R: unable to install packages

Hi,

I'm running R version 2.8.1 on Windows and I'm having quite a lot of
trouble just to install package RODBC.

When I run command install.packages("RODBC"), the following error
message appears:

Warning: unable to access index for repository
http://cran.pt.r-project.org/bin/windows/contrib/2.8

Then it stops and doesn't install anything. I've also tried downloading
from several mirrors with no success. Is this normal? Am I doing anything wrong?

Thanks,
Joao Vaz