Dani > I have a dataframe named myMatrix with the structure
If it really is a dataframe, why is it called myMatrix :-) I guess you actually have a factor matrix. From the message below, Cr would appear to be a factor. There are some fundamental distinctions in R (such as between a matrix and a dataframe, or between factor and numeric) which can seem 'subtle' as first. It is worth investing a bit of effort into understanding these. [My apologies if this is stating something which is obvious to you.] HTH .... Peter Alspach > Treatment Time Cr mIb ... > > Being the treatment and time the predictors and Cr, mIb and > so on the response variables. When I call > > Cr.aov <- aov(Cr~Treatment, data=myMatrix) > > I got this error: > > Error in storage.mode(y) <- "double" : > invalid to change the storage mode of a factor In addition: > Warning message: > In model.response(mf, "numeric") : > using type="numeric" with a factor response will be ignored > > Can anyone help me? I take the chance to ask another > question. I would like to perform an ANOVA on different > variables. Is the call aov(Cr+mIb+...~Treatment, > data=myMatrix) o correct way of doing it? What I would like > to have is a p value for the variance for each response variable. > Best, > > Dani > > -- > Daniel Valverde Saubí > > Grup de Biologia Molecular de Llevats > Facultat de Veterinària de la Universitat Autònoma de > Barcelona Edifici V, Campus UAB > 08193 Cerdanyola del Vallès- SPAIN > > Centro de Investigación Biomédica en Red en Bioingeniería, > Biomateriales y Nanomedicina (CIBER-BBN) > > Grup d'Aplicacions Biomèdiques de la RMN Facultat de > Biociències Universitat Autònoma de Barcelona Edifici Cs, Campus UAB > 08193 Cerdanyola del Vallès- SPAIN > +34 93 5814126 > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > The contents of this e-mail are privileged and/or confidential to the named recipient and are not to be used by any other person and/or organisation. If you have received this e-mail in error, please notify the sender and delete all material pertaining to this e-mail. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
