> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > [EMAIL PROTECTED] > Sent: Wednesday, February 18, 2004 3:36 AM > To: [EMAIL PROTECTED] > Subject: [R] How to write efficient R code > > I have been lurking in this list a while and searching in the > archives to > find out how one learns to write fast R code. One solution > seems to be to > write part of the code not in R but in C. However after > finding a benchmark > article (http://www.sciviews.org/other/benchmark.htm) I have been more > interested in making the R code itself more efficient. I > would like to find > more info about this. I have tried to mail the contact person for the > benchmark, but I have so recieved no reply.
One way to make your codes more efficient is to use "vectorisation" -- vectorise your codes. I'm not sure where you can find more information about it, but an example would be to use the apply() function on a data frame instead using a loop. Avoid loops if you can. Kevin -------------------------------------------- Ko-Kang Kevin Wang, MSc(Hon) SLC Stats Workshops Co-ordinator The University of Auckland New Zealand ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
