[rkward-devel] cannot load eRm package

[Nikolaos Tsigilis]

Dear Meik Michalke,

I received your e-mail.  Thank you very much for the response. By the way is there any manual for the IRT module in the RKward?

Nikos

-------------------------------------------------
Δρ. Νικόλαος Τσιγγίλης
Σχολικός Σύμβουλος Φυσικής Αγωγής 
e-mail: nikostsigilis at gmail.com
τηλ. 6973026680
skype name:  ntsigilis

-----Original Message-----
From: meik michalke [mailto:Meik.Michalke at uni-duesseldorf.de] 
Sent: Monday, May 12, 2014 2:04 PM
To: Nikolaos Tsigilis
Cc: rkward-devel at lists.sourceforge.net
Subject: Re: [rkward-devel] cannot load eRm package

hi nikolaos,

Am Montag, 12. Mai 2014, 13:49:11 schrieb Nikolaos Tsigilis:
> Thank you for the RKward project.  I am using RKWard Version 0.6.0 
> Using KDE Development Platform 4.8.00 on a laptop with OS Windows 7 
> (64bit).  I am trying to load "eRm" package in order to use IRT module 
> (rating scale model
> fit) and I get the following error Warning message:package 'eRm' is 
> not available (for R version 2.15.1).  Is there any solution?

the problem you're facing is not so much one with RKWard, but with R itself. 
you seem to have R 2.15 installed and are trying to install new packages from CRAN. the precompiled packages there are usually only available for the most recent R version, that is R 3.1.

you can either update R to 3.1 (note: you *must* also update RKWard to 0.6.1 then, because 0.6.0 did not support R >= 3.0 yet), or try to install the package from source, and not the precompiled package; see ?install.packages() for instructions how to do that. be aware that this might fail if your windows system isn't set up for package building yet.


viele grüße :: m.eik

--
  dipl. psych. meik michalke
  institut f"ur experimentelle psychologie
  abt. f"ur diagnostik und differentielle psychologie
  heinrich-heine-universit"at d-40204 d"usseldorf