phyloseq error

Question

[azevedopaula236]

Hi There

I am using phyloseq and I get the following error message OTU = otu_table(otumat, taxa_are_rows=TRUE) Error in validObject(.Object) : invalid class “otu_table” object: Non-numeric matrix provided as OTU table. Abundance is expected to be numeric.

Could you please advise what am I doing wrong and how to fix it? Thank you in advance, Paula.

[Chris Dean]

This error indicates that you have a column with non-numeric inputs somewhere. This most often happens to me when I have forgotten to discard sample names from the first column in the matrix.