| NA | Built-in Variable |
| Missing value. |
| isna (x) | Mapping Function |
Return 1 for elements of x that are NA (missing) values and zero
otherwise. For example
is_NA ([13 Inf, NA, NaN])
=> [ 0 0, 1, 0 ]
|
| is_nan_or_na (x) | Mapping Function |
Return 1 for elements of x that are NaN or NA (missing) values
and zero otherwise. For example
is_NAN_or_NA ([13 Inf, NA, NaN])
=> [ 0 0, 1, 1 ]
|