13.2 The attach()-function

  • attach(): When you attach a data frame you can use variable names directly without referring to the dataframe (R understands that)
  • Problem: It can cause all sorts of errors since you might loose oversight (especially in more complex scripts)!

  • Avoid it and…
    • …work with ankers $ to access variables
    • …specify data frame in the function where possible, e.g. lm(...., data=yourdataframe)
    • …use other ways.