# select the number of component section##

[Peipenggang]

Dear Authors,
First of all, thank you for the great software, but when I work with the DIABLO software, I am unable to proceed past the # select the number of component section## as I keep encountering errors. The details are below. I would be grateful if you could help me identify the issue and provide me with a solution.

The details about error: BiocParallel errors

1 remote errors, element index: 1

0 unevaluated and other errors

first remote error.

Error in solve.default(t(Pmat) %*% Wmat): Lapack routine dgesv: System is exactly singular: U[2,2] = 0

In addition: Warning message.

In FUN(X[[i]], ...) At least one class is not represented in FUN(X[[i]], ...)

At least one class is not represented in one fold, which may unbalance the error rate. which may unbalance the error rate.

Consider a number of folds lower than the minimum in table(Y): 4.

sessionInfo()

R version 4.2.1 (2022-06-23)

Platform: x86_64-apple-darwin17.0 (64-bit)

Running under: macOS Ventura 13.2.1

Matrix products: default

LAPACK: /Library/Frameworks/R.framework/Versions/4.2/Resources/lib/libRlapack.dylib

locale: [1] zh_CN.UTF-8/zh_CN.UTF-8/zh_CN.UTF-8/C/zh_CN.UTF-8/zh_CN.UTF-8

Thank you very much for your time and assistance.

Best regards,

Pei Penggang

[evaham1]

Hi @Peipenggang , sorry the delay in getting back to you, we have been without a mixOmics maintainer for the past months. I have started to look into your issue but I need more information to help me reproduce your error, could you please share the code you have used to generate tmp_data, tmp_ttt and the other arguments you have passed to tune.block.splsda? Please could you share this as pasted code rather than a screenshot so I can run it on my end with some test data and see if I get the same error as you, thank you!