get Row Number for R data frame

Question

A question about data frames in R. I want to extract a row from a data frame, along with its position(row number) in the original data frame. The idea is to create a new data f

Answer 1

You can do this in one or two lines of code:

rNo <- as.integer(rownames(patchList[which(patchListTop5$sensitivity == patchLocalSpec),]))
patchLocalNo <- cbind(patchLocalNo[rNames,], rNo)