Hello, I have two data frames like this:
> head(l4) X1 X2 X3 X4 X5 variant_id pval_nominal gene_id.LCL 1 chr1 13550 G A b38 1:13550:G:A 0.375614 ENSG00000227232 2 chr1 14671 G C b38 1:14671:G:C 0.474708 ENSG00000227232 3 chr1 14677 G A b38 1:14677:G:A 0.699887 ENSG00000227232 4 chr1 16841 G T b38 1:16841:G:T 0.127895 ENSG00000227232 5 chr1 16856 A G b38 1:16856:A:G 0.627822 ENSG00000227232 6 chr1 17005 A G b38 1:17005:A:G 0.802803 ENSG00000227232 > head(asign) gene chr chr_pos pos p.val.Retina 1: ENSG00000227232 chr1 1:10177:A:AC 10177 0.381708 2: ENSG00000227232 chr1 rs145072688:10352:T:TA 10352 0.959523 3: ENSG00000227232 chr1 1:11008:C:G 11008 0.218132 4: ENSG00000227232 chr1 1:11012:C:G 11012 0.218132 5: ENSG00000227232 chr1 1:13110:G:A 13110 0.998262 6: ENSG00000227232 chr1 rs201725126:13116:T:G 13116 0.438572 > m = merge(l4, asign, by.x=c("X1", "X2"), by.y=c("chr", "pos")) Error in merge.data.frame(l4, asign, by.x = c("X1", "X2"), by.y = c("chr", : negative length vectors are not allowed > sapply(l4,class) X1 X2 X3 X4 X5 variant_id "character" "character" "character" "character" "character" "character" pval_nominal gene_id.LCL "numeric" "character" > sapply(asign,class) gene chr chr_pos pos p.val.Retina "character" "character" "character" "character" "character" Please advise as to why I am getting this error when merging? Thanks Ana ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.