Variance Inflation factor

Thanks, all. I will upgrade my R in linux but I suspect the root cause is some set up problem although I don't know how to trace it yet. I am not that familiar with R in Linux. If somebody could give me a clue how to diagnose this kind of problem, that will be great.



HXD
-----Original Message-----
From: R. Michael Weylandt [mailto:michael.weylandt at gmail.com] 
Sent: Wednesday, July 11, 2012 4:04 PM
To: Hui Du
Cc: Jorge I Velez; R-help
Subject: Re: [R] Variance Inflation factor

You're rather out of date with your version of R -- if you want to use
the CRAN binaries provided by install.packages(), you usually have to
be at most one minor rev behind.

Try install.packages("car", type = "source")

But even better -- update to a poppin-fresh R 2.15.1: you get
parallelization, a byte-code-compiler, and all sorts of other goodies.

Best,
Michael

On Wed, Jul 11, 2012 at 5:34 PM, Hui Du <Hui.Du at dataventures.com> wrote:

Thank you for your consideration.

sessionInfo()

R version 2.11.1 (2010-05-31)
i686-pc-linux-gnu

locale:
[1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=C              LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8       LC_NAME=C
[9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

HXD

From: Jorge I Velez [mailto:jorgeivanvelez at gmail.com]
Sent: Wednesday, July 11, 2012 3:31 PM
To: Hui Du
Cc: R-help
Subject: Re: [R] Variance Inflation factor

Could you please include your sessionInfo()  ?

Thank you,
Jorge.-

On Wed, Jul 11, 2012 at 6:27 PM, Hui Du <Hui.Du at dataventures.com<mailto:Hui.Du at dataventures.com>> wrote:
Thanks. But in UNIX side, I got the same error

In getDependencies(pkgs, dependencies, available, lib) :
 package ???car??? is not available

HXD

From: Jorge I Velez [mailto:jorgeivanvelez at gmail.com<mailto:jorgeivanvelez at gmail.com>]
Sent: Wednesday, July 11, 2012 3:19 PM
To: Hui Du
Cc: R-help
Subject: Re: [R] Variance Inflation factor

See the examples at

# install.pacages('car')
require(car)
?vif

HTH,
Jorge.-

On Wed, Jul 11, 2012 at 6:10 PM, Hui Du <> wrote:
Hi All,


I need to calculate VIF (variance inflation factor) for my linear regression model. I found there was a function named  vif in 'HH' package. I have two questions:


1)      I was able to install that package in my R under windows. But while trying to install that package in UNIX, I got error:

Package HH is not available.

           Does somebody know why?


2)      Does somebody know the other way to calculate vif in R?


Many thanks.
HXD

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