search for: ma3r3y1r3

Hello, I am trying to cycle through a csv and make some summary statistics. I need to select rows based on the number in the row name that comes after the letter 'y'. For example, ? BA1y1 would equal 1, ?C3A2r3y1 would equal 1 and ?MA3r3y1r3 would equal 1. I currently have my code ?cycling through by the 5th character but my rows have variable length and the y can occur in several different locations in the row name. Here is my current code sdat <- read.csv (paste(data.dir,"/summary.data.csv", sep="")) year &...