This function checks the validity of the landing_date in the provided dataset by comparing
it to the submission_date. If the landing_date is after the submission_date, an alert
is triggered and the landing_date is set to NA for those records.
Usage
validate_dates(data = NULL)
Arguments
- data
A data frame containing the landing_date and submission_date columns.
Value
A data frame with three columns:
survey_id: The unique identifier for each survey
landing_date: The original date if valid, otherwise NA
alert_date: A numeric value (1) indicating an invalid date, or NA if the date is valid