Hi R-users: Yesterday I ran a R code for 9 hours and it did not show any sign to stop. Then I interrupted it and found it had completed 82.5%.
This morning I decided to wait for another 11 hours to see what will happen. Wait a minute, I heard that transforming data.frame to matrix will make R code faster. Then I made the modification in my R code. Oooh, the new code finished within 30 minutes!! Are there any other tips to speed up R program? Or someone could indicate me some documents or websites on R code optimization? #OS: Win XP, CPU: Pentium IV, 3.20G, Memory: 1G #for() loop: 1000*1616*3*41, 3 data.frames (dim = c(1616,5), c(1616), c(1616) respectively) Thanks in advance, Xiaohua -- Xiaohua Dai, Dr. -------------------------------------------------------------------------------- * Postdoctoral in elephant-tree ecosystem simulation --------------------------------------------------------------------------------- Centre for Systems Research, Durban Institute of Technology P.O.Box 953, Durban 4000, South Africa Tel: +27-31-2042737(O) Fax: +27-31-2042736(O) Mobile: +27-723682954 Publications: http://www.getcited.org/?MBR=11061629 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
