Sorry. I made a typo. It is the 5th column (not 4th). Thank you.
Tae-Jin
Begin forwarded message:
> From: Tae-Jin Lee <tj...@ncsu.edu>
> Date: February 4, 2011 7:09:38 PM EST
> To: r-help@R-project.org
> Subject: Help!!! from R beginner
>
> Hello,
>
> I'm trying to add a column to the following data frame. The new
> column will contain "black" when the 5th column(if_TE_related) is
> "TE_related", or "orange" when the 4th column is " " (space).
>
> "chromo" "MSU_locus" "end5" "end3" "if_TE_related"
> "chr04" "LOC_Os04g01006" 1032 2679 "TE_related"
> "chr04" "LOC_Os04g01008" 7636 3951 "TE_related"
> "chr04" "LOC_Os04g01010" 9521 10296 "TE_related"
> "chr04" "LOC_Os04g01020" 17165 17437 " "
> "chr04" "LOC_Os04g01030" 29372 18440 "TE_related"
> "chr04" "LOC_Os04g01040" 30637 37300 "TE_related"
> ...
>
> So, after a data manipulation, it should look like the following...
>
> "chromo" "MSU_locus" "end5" "end3" "if_TE_related" "color"
> "chr04" "LOC_Os04g01006" 1032 2679 "TE_related" "black"
> "chr04" "LOC_Os04g01008" 7636 3951 "TE_related" "black"
> "chr04" "LOC_Os04g01010" 9521 10296 "TE_related" "black"
> "chr04" "LOC_Os04g01020" 17165 17437 " " "orange"
> "chr04" "LOC_Os04g01030" 29372 18440 "TE_related" "black"
> "chr04" "LOC_Os04g01040" 30637 37300 "TE_related" "black"
> ...
>
> I have worked on the following code to do this job using function
> and loop, but it is not working. If someone help me, I would really
> appreciate!!!
> The original data frame is Os.chr4.gene.new.
>
> Gene <- Os.chr4.gene.new[, c("if_TE_related")]
> Genecolor <- function(Gene) {
> lg <-length(Gene)
> for(i in 1:lg) {
> if (Gene == "TE_related") {D1 <- (Gene == "black")}
> if (Gene == " ") {D1 <- (Gene == "orange")}
> }
> Gene.color <- cbind(Gene, D1)
> write.table(Gene.color, file="Gene_color1.txt", sep="\t",
> row.names=F)
> }
> Genecolor(Gene)
>
>
> Tae-Jin
> Researcher in NC State University
>
>
>
>
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