Dummy variable for observation value in list.
Syntax: @inlist(x, list)
x: number or string
list: number or string
Return: number
where list is a quoted, space delimited list of values.
Returns a dummy variable series equal to 1 for observations where x is equal to one of the values specified in list, and 0 otherwise.
Note that string comparisons are case sensitive.
Examples
series d1 = @inlist(x, "1 3 5 7 9")
creates a dummy variable that takes the value 1 where X equals 1, 3, 5, 7, or 9, and 0 otherwise.
series d2 = @inlist(a, """no problem"" help")
creates a dummy variable that takes the value 1 for observations in A that equal “no problem” or “help”, and 0 otherwise.
Cross-references