get_region_boundary: Get region boundary for any specified region
Description
Universal function to get region boundaries for any geographic area including
US states, countries, CONUS, counties, or custom bounding boxes with
comprehensive error handling.
Usage
get_region_boundary(region_def, verbose = FALSE)
Value
sf object with boundary geometry
Arguments
region_def
Region definition in various formats:
Character: "Ohio", "Nigeria", "CONUS"
Character with colon: "Ohio:Franklin" (state:county)