Clean Registration Numbers

Standardizes boat registration numbers by removing spaces and filtering out invalid or placeholder values.

Usage

clean_registration(x)

Arguments

x

Character vector of registration numbers to clean

Value

Character vector with cleaned registration numbers. Invalid values (empty strings, "0", "0000", "035") are converted to NA.

Details

The function performs the following transformations:

• Applies text cleaning via clean_text()

• Removes all spaces

• Converts invalid placeholders to NA: "", "0", "0000", "035"