Dear william,
There must be at least one perfect collinearity (within the numerical
accuracy of the computation) among the variables in mydataN; this is not
surprising given that there are apparently 923 variables for 982
observations. Do you really want to do an exploratory factor analysis for
923 variables?
John
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at
r-project.org]
On> Behalf Of onyourmark
> Sent: April-20-09 7:48 PM
> To: r-help at r-project.org
> Subject: [R] factanal error
>
>
> Hi. I tried running the following code. I don't understand the error.
>
> mydata <-
read.table("C:/dataForR/radiology/wordFrequencies.csv",
> header=TRUE, sep=",")
>
> > dim(mydata)
> [1] 982 924
> mydataN<-mydata[,-923]
> > dim(mydataN)
> [1] 982 923
>
> cor(mydataN)
> factanal(mydataN, factors=3)
>
>
> Error in solve.default(cv) :
> Lapack routine dgesv: system is exactly singular
>
> Thank you for looking at this!
> --
> View this message in context: http://www.nabble.com/factanal-error-
> tp23147009p23147009.html
> Sent from the R help mailing list archive at Nabble.com.
>
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