Cant convert factor to numeric in R

Question

I\'ve tried:

• i <- as.numeric(as.character(Impress))

• i <- as.numeric(as.character(levels(Impress)))

Answer 1

Because the data has commas, R cannot convert it to a numeric. You have to remove the commas with sub() first and then convert:

i <- as.numeric(gsub(",", "", as.character(impress)))