your indexing is wrong; another way to achieve the same result is outer(run_rows, run_cols, "+")
I hope it helps. Best, Dimitris ---- Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://www.med.kuleuven.be/biostat/ http://www.student.kuleuven.be/~m0390867/dimitris.htm ----- Original Message ----- From: "Serguei Kaniovski" <[EMAIL PROTECTED]> To: <r-help@stat.math.ethz.ch> Sent: Monday, December 05, 2005 12:47 PM Subject: [R] What is wrong with this FOR-loop? > Hi, I have a more complex example, but the problem boils down to > this > FOR-loop not filling in the res-matrix > > run_rows<-seq(0,1,0.05) > run_cols<-seq(0.3,0.6,0.05) > > res<-matrix(NA,length(run_rows),length(run_cols)) > > for(i in run_rows) > { > for(j in run_cols) > { > res[i,j]=i+j > #niether the above, nor res[[i,j]]=i+j work, why? > } > } > > Thank you, > Serguei > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html