Hello Petr, After your message, I finally decided to have a look in my script and to modify the functions. There is no more loop on rows and functions calling functions. I now use new functions applied on complete columns and I also use your 'matrix' tip (Very useful).
Result: with the old script : 340000 rows in around 10 hours (then I stopped) with the new functions : 2500000 rows in 50 seconds Again thank you for your comment !!!! Ptit Bleu. -- View this message in context: http://r.789695.n4.nabble.com/Still-confused-with-lapply-tp3050414p3065532.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.
