Restricts get_unit_code to just National Parks

`get_park_code` is identical to `get_unit_code` except the output is restricted to just National Parks (as opposed to including networks, etc.). Accesses info from irmaservices.nps.gov. Search for park or park unit with any string and return all applicable national park unitCodes.

Usage

get_park_code(park)

Arguments

park

is a case-insensitive string containing some part of the unit's FullName, e.g "Yellow".

Value

one data frame to the global environment. May contain multiple matches.

Examples

if (FALSE) { # \dontrun{
get_park_code("Yellow")
} # }