try this: (you were trying to index with non-integer numbers)
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 1:length(run_rows)) { for(j in 1:length(run_cols)) { res[i,j] = run_rows[i] + run_cols[j] #niether the above, nor res[[i,j]]=i+j work, why? } } On 12/5/05, Serguei Kaniovski <[EMAIL PROTECTED]> wrote: > > 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 > -- Jim Holtman Cincinnati, OH +1 513 247 0281 What the problem you are trying to solve? [[alternative HTML version deleted]] ______________________________________________ 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