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ChildMindInstitute / questionnaire-diagnosis

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🐛 🚧 "the standard deviation is zero" #6

Open shnizzedy opened 6 years ago

shnizzedy commented 6 years ago

In trying to run mixOmics' at its default configuration, I get the warnings

a Partial Least Squares is being performed (PLS)
Warning message:
In cor(A[[k]], variates.A[[k]]) : the standard deviation is zero

and no other output with each of our training files and with at least 0 < ncomp ≤ 100

I can successfully do the mixOmics PCA with small subsets of the questionnaires, but I don't understand the pipeline well enough to debug this outcome at this time.

This issue may be related to one of the FAQ on their "Parameters tuning" page:

the total number of variables from both data sets is much larger than the number of samples

Ref https://github.com/cran/mixOmics