Hello everyone, I was asked to repost this again, sorry for any inconvenience.
I'm looking replacement for ddply function from plyr package. Function allows to apply function by category stored in any column/columns. Regular loops or lapplys slow down greatly because my unique combination count exceeds 9000. Is there any available solution which allow me to apply function by category? currently my code looks like snippet below ddply(myData, c("country_name", "product_name"), myFunction) Please note that I'm looking for decently performing resolution. Thanks in advance! With regards, Adam. -- View this message in context: http://r.789695.n4.nabble.com/ddply-from-plyr-package-any-alternatives-tp3765936p3765936.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.