Hello, I'm trying to paste two columns of a matrix GB_ACC GENE GENE_SYMBOL NM_010657 NM_010657 NM_027162 NM_027162 NM_198863 NM_198863 NM_010727 NM_010727
These two column are a part of a 41,000 x 26 matrix. I wanted these two column to be pasted into one (the firstone, GB_ACC). I tried to do it with a for loop, but it takes ages to finish: for( i in 1:length(combined[,15])){ combined[i,19]<- paste(combined[i,19], combined[i,20], sep = " ") } Does anyone has a better idea? I tried to do it with the apply function, but I'm getting an error message that paste(...) is not a function. THX Assa [[alternative HTML version deleted]] ______________________________________________ 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.