Number values include comma — how do I make these numeric? [duplicate]

Answer 1

Use as.numeric(gsub(",", "", df$var1)).

You want to use gsub as sub will only replace the first comma.

Answer 2

If you are trying to add a new column var2 to df, you can use the following

  df$var2 <- as.numeric(gsub(",", "", as.character(df$var1)))