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Hello! I'm writing a script with a lot of loops and it executes really slowly over huge amounts of data. I assume it's because I don't know how to avoid using loops. Logical subscripts are more desirable...

Thank you! The script is now adapted to Biostrings and it is really fast! For example, it does: alph_sequence <- alphabetFrequency(data$sequence, baseOnly=TRUE) data$GCsequence <- rowSums(alph_sequence[,c("G", "C")]) / rowSums(alph_sequence) in the G+C...

I solved it. It was quite easy: Because each test is a list, it's necessary to specify which element contains the comparison matrix (p values). Let me show it: >show(test) An object of class ?pairwise.htest? $method [1...

Hi! I have been working several years with R but it's my first public question. I hope I'll be clear :) . This question is related to obtaining letter-based representation of non-parametric pairwise comparisons. I have a dataframe...

Patrick Burns kindly provided an article about this issue called 'The R Inferno'. However, I will expand a little bit my question because I think it is not clear and, if I coud improve the code it will be more...

Hello: That's because the required input should be a symmetric matrix with all the comparisons, e.g., it should have the self-comparisons diagonal. In an hypotetical case with two treatments, the pairwise-comparison test output is something like...