[R] Question about package "principal"

[오건희]

Hi,

I tried to run "principal" function in the 'psych' package, but it failed
to do..

here is both my code and error message.

I searched on the web, but couldn't find the exact answer I wanted.

> data<-read.csv("
https://raw.githubusercontent.com/mylesmharrison/delta_PCA_kmeans/master/delta.csv
",row.names=1)

> airpca<-principal(data,nfactors=33,rotate="none")
Error in solve.default(model, r) :
  system is computationally singular: reciprocal condition number =
7.05776e-17
In addition: Warning messages:
1: In cor.smooth(model) :
  Matrix was not positive definite, smoothing was done
2: In cor.smooth(r) : Matrix was not positive definite, smoothing was done

Thank you for your help.

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