Coordinate reference system of a grid — st

Reads the CRS a grid's coordinates are in, as sf::st_crs() does for any spatial object. An Earth grid returns 'WGS84'; a grid built on another body returns a longlat CRS on the sphere of its radius.

Usage

# S3 method for class 'HexGridInfo'
st_crs(x, ...)

# S3 method for class 'HexData'
st_crs(x, ...)

Arguments

x: A HexGridInfo or HexData object
...: Passed on to sf::st_crs()

Value

An object of class crs, as sf::st_crs() returns: a list carrying the reference system in 'PROJ' and 'WKT' form. It says how to read the coordinates that the grid's cells, centres and sf exports come back in.

Examples

st_crs(hex_grid(resolution = 5))
st_crs(hex_grid(resolution = 5, radius_km = "mars"))