Hello, I previously sent this message which was stripped off due to HTML mail. Sorry!
Thanks. Hello All, I am new to the list. I have been learning to use R recently and its been great to see so much help available. However I must admit, I have stumbled upon a problem with correlation matrices and was hoping if someone could help. I have an excel workbook with a sheet per drug. Each sheet has 40 patients' drug response measured over different time points (several days). I have already been able to create a cor() matrix of all the drugs for all the patients on each day. However I have been asked to prepare a matrix of all days of all people for all drugs. So since there are 26 drugs, I am expected to form a 26x26 matrix for all this data. I am not even sure if this is possible. Can anyone point me in the right direction? PS: If I make individual matrix and combine them using cbind(), it is not a 26x26 sqaure matrix. Any help would be greatly appreciated. Thanks ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
