NA values dataset

how can I create a dataset with certain values in the set being NA.I want these values to be removed when using na.omit function in R

There are a few different ways:

  • Use a Custom List
  • Use an inline formula (the f(x)) button to return “NA” instead of the generated value when specific conditions are met
  • Use the Formula datatype to do the same as #2, but with a seperate field.

not exactly NA.They should be not applicable or null values but nil does not work