Check if the elements could be of any SAS missing data variant

Missing Data from sas7bdat imported datesets could be imported in different ways we currently check for 'NA', NA, '.', and ''.

is_sas_na(x)

Arguments

x

vector with data

Value

logical vector

Examples

is_sas_na(c(1,2,NA))
#>     1     2  <NA> 
#> FALSE FALSE  TRUE 

is_sas_na(c("a", NA, "NA", ""))
#>     a  <NA>    NA       
#> FALSE  TRUE  TRUE  TRUE