Paulo, thank you for the straightforward hint. But then, I should use the Box-Cox transformation to a set of data, whose class at the moment is data.frame. The help says only lm and aov objects can be handled. What should I do? thank you Stefano
On Thu, 2006-02-09 at 10:56 -0200, Paulo Justiniano Ribeiro Jr wrote:
first load the package with: require(MASS) and then use the boxcox() function On Thu, 9 Feb 2006, Stefano Sofia wrote:
Date: Thu, 09 Feb 2006 11:51:02 +0000 From: Stefano Sofia <stefano.sofia at regione.marche.it> To: r-help at stat.math.ethz.ch Subject: [R] about Cox-Box transformation Dear R-users, I am using R version 1.8.0-1 under Suse 8.2. I need to use the boxcox command because I want to apply a Cox-Box transformation to a vector of rainfall values. Within the libraries, the MASS library is present, but I don't know whether this means that is automatically installed or not. The command doesn't work. What do I have to do in order to make it working? Is just a problem of installation or simply of recalling the right command? thank you for your help Stefano
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Paulo Justiniano Ribeiro Jr LEG (LaboratÂório de EstatÂÃÂÂstica e GeoinformaÂçÂão) Departamento de EstatÂÃÂÂstica Universidade Federal do ParanÂá Caixa Postal 19.081 CEP 81.531-990 Curitiba, PR - Brasil Tel: (+55) 41 3361 3573 Fax: (+55) 41 3361 3141 e-mail: paulojus at est.ufpr.br http://www.est.ufpr.br/~paulojus