Hey Don, many thanks, I tried that and it works just fine. I have two questions though:
1. In Addition to generating the t1-t5 (I have five iterations, in fact), the code will generate an additional ti(without subscript), which seems to be a copy of ti5. Is that what it should do ( and if yes, why?) or did I make any mistake I am not aware of 2. Just so that I understand what I am doing here: what is this '.GlobalEnv' about? And just to mention that: at the moment I don't think I can really afford considering things like style - so as long as it works I am really happy;-) Thank's again for your help Bernhard -- View this message in context: http://r.789695.n4.nabble.com/Loop-over-several-variables-tp4648112p4648130.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.