Data for semi-major axis and ellipsoid flattening for EPSG codes

Calculating coordinate precision uncertainty requires the values for the semi-major axis and the ellipsoid flattening for the specified coordinate reference system. These data were generated using st_crs to extract the the semi-major axis and ellipsoid flattening values from the EPSG codes.

Usage

crs_data

Format

A data frame with 869 rows and 4 variables:

epsg_code: EPSG code for the coordinate reference system
name: Name of the coordinate reference system
semi_major_axis: radius at the equator for the given datum
inverse_flattening: inverse of the flattening component of the datum