> Unfortunately we have mixed types f.e text , dates times , and numbers
OK - in that case you can't fit the data into data.frame. Possibley you cold get what you need using some kind of list structure but I think it's better to ask why you need to transpose the data. Maybe someone can suggest an alternative solution that doesn't require the transposition. cu Philipp -- Dr. Philipp Pagel Lehrstuhl für Genomorientierte Bioinformatik Technische Universität München Wissenschaftszentrum Weihenstephan Maximus-von-Imhof-Forum 3 85354 Freising, Germany http://webclu.bio.wzw.tum.de/~pagel/ ______________________________________________ R-help@r-project.org 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.