IGRF CRAN release v1.0

The 13th Generation International Geomagnetic Reference Field (IGRF) implemented as an R package. The igrf package provides an R version of the of the original IGRF model in Fortran published by Alken et al. 2021 (available on the NOAA website https://www.ngdc.noaa.gov/IAGA/vmod/igrf.html). R outputs have been verified to correspond with the original Fortran code and can be considere equivalent with the exception that values in the R are not rounded before output. For all intents and purposes the data can be considered equivalent.

For full model details I refer to Alken et al. 2021, and the project website where both the original code and a brief model description can be found. The authors of both the R package and the original Fortran code take no responsibility regarding the use of these data within a professional context. For caveats on model use I refer to the health warning on the original project website (https://www.ngdc.noaa.gov/IAGA/vmod/igrfhw.html).