Calculate the Centroid of a Country from its Shapefile

This function reads a country shapefile, calculates its centroid, and returns the centroid coordinates (longitude and latitude) along with the ISO3 country code.

Usage

get_centroid(shapefile)

Arguments

shapefile

A character string representing the file path to a country shapefile (in .shp format).

Value

A data frame with the following columns:

• iso3: The ISO3 country code extracted from the shapefile name.

• lon: The longitude of the country's centroid.

• lat: The latitude of the country's centroid.

Details

The function reads the shapefile using sf::st_read(), calculates the centroid of the country using sf::st_centroid(), and extracts the coordinates of the centroid with sf::st_coordinates(). The ISO3 code is extracted from the filename of the shapefile, assuming the first three characters of the shapefile name represent the ISO3 country code.

Examples

if (FALSE) { # \dontrun{
# Example usage:
# Assuming you have a shapefile "ZAF_ADM0.shp" for South Africa
shapefile_path <- "path/to/shapefile/ZAF_ADM0.shp"
centroid_data <- get_centroid(shapefile_path)
print(centroid_data)
} # }