<<WARNING: Not tested in the absence of data provided by dput() to allow easy input into R>>
1. Change the names of the inputs by removing the dash: This is not a legitimate R name and c/sh ould be causing problems in the aov() call since the names are not quoted. 2. The model specification is wrong. It should be: aov(Correct~TaskKind*DataKind+Error(Subject),data=allDataRaw.xp) -- Bert On Mon, Jul 2, 2012 at 6:04 AM, Jessica Streicher <j.streic...@micromata.de>wrote: > Also, try googling for - R model is singular - , there seem to have been > a lot of people with that particular error. > > On 02.07.2012, at 14:56, Jessica Streicher wrote: > > > Just looking at it i would try renaming Task-Kind, Data-Kind an > Time-Taken > > Those are ambiguous in the Formula. > > > > "Task-Kind" vs "Task" - "Kind" > > > > Though that might not be the error at hand :) > > > > > > On 02.07.2012, at 14:15, zetwal wrote: > > > >> Hello > >> > >> I have some test data that looks like that from a within subject > experiment. > >> Subject Task-Kind Data-Kind Time-Taken Correct > >> 1 A Data1 5 1 > >> 1 A Data1 3 0 > >> 1 A Data1 1 1 > >> 1 A Data2 8 1 > >> 1 A Data2 7 0 > >> 1 A Data2 5 0 > >> 1 A Data3 2 1 > >> 1 A Data3 7 0 > >> 1 A Data3 5 0 > >> 1 A Data3 6 0 > >> 1 B Data1 3 1 > >> 1 B Data1 1 1 > >> 1 B Data1 3 0 > >> 1 B Data2 9 0 > >> 1 B Data2 8 1 > >> 1 B Data2 5 0 > >> 1 B Data3 2 1 > >> 1 B Data3 7 2 > >> 1 B Data3 5 3 > >> 1 B Data3 6 0 > >> 1 C Data1 3 1 > >> 1 C Data1 1 1 > >> 1 C Data1 3 0 > >> 1 C Data2 9 0 > >> 1 C Data2 8 1 > >> 1 C Data2 5 0 > >> 1 C Data3 2 1 > >> 1 C Data3 7 2 > >> 1 C Data3 5 3 > >> 1 C Data3 6 0 > >> 2 A Data1 5 1 > >> 2 A Data1 3 0 > >> 2 A Data1 1 1 > >> 2 A Data2 8 1 > >> 2 A Data2 7 0 > >> 2 A Data2 5 0 > >> 2 A Data3 2 1 > >> 2 A Data3 7 0 > >> 2 A Data3 5 0 > >> 2 A Data3 6 0 > >> 2 B Data1 3 1 > >> 2 B Data1 1 1 > >> 2 B Data1 3 0 > >> 2 B Data2 9 0 > >> 2 B Data2 8 1 > >> 2 B Data2 5 0 > >> 2 B Data3 2 1 > >> 2 B Data3 7 2 > >> 2 B Data3 5 3 > >> 2 B Data3 6 0 > >> 2 C Data1 3 1 > >> 2 C Data1 1 1 > >> 2 C Data1 3 0 > >> 2 C Data2 9 0 > >> 2 C Data2 8 1 > >> 2 C Data2 5 0 > >> 2 C Data3 2 1 > >> 2 C Data3 7 2 > >> 2 C Data3 5 3 > >> 2 C Data3 6 0 > >> . > >> . > >> . > >> > >> some notes: > >> there are 20 subjects > >> there are 5 different kinds of tasks > >> There are 5 different kinds of data > >> and there are several different variations for a certain kind of task > and > >> kind of data which is why for Subject = 1 Task-Kind=A and > Data-Kind=Data1 > >> we have 3 different results. > >> > >> The measured parameters are time to complete the task and whether it was > >> correct or not (0 implies correct and 1 implies not correct) > >> > >> I am computing the anova as follows: > >> aov.ex = > >> > aov(Correct~Task-Kind*Data-Kind+Error(Subject/(Task-Kind*Data-Kind)),data=allDataRaw.xp) > >> > >> since I want to see how the result is affected by the different kinds of > >> data as well as the the kind of task and I get a warning message saying: > >> Error() model is singular > >> > >> I would be very grateful if someone could please tell me what does this > >> mean. > >> Thanks > >> Pascal > >> > >> -- > >> View this message in context: > http://r.789695.n4.nabble.com/Error-model-is-singular-what-does-that-mean-tp4635103.html > >> Sent from the R help mailing list archive at Nabble.com. > >> > >> ______________________________________________ > >> 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. > > > > ______________________________________________ > > 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. > > ______________________________________________ > 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. > -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm [[alternative HTML version deleted]] ______________________________________________ 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.
