[R] factanal error

[onyourmark]

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!
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