nvctr: The n-vector Approach to Geographical Position Calculationsusing an Ellipsoidal Model of Earth
The n-vector framework uses the normal vector to the Earth ellipsoid (called n-vector) as a non-singular position representation that turns out to be very convenient for practical position calculations. The n-vector is simple to use and gives exact answers for all global positions, and all distances, for both ellipsoidal and spherical Earth models. This package is a translation of the 'Matlab' library from FFI, the Norwegian Defence Research Establishment, as described in Gade (2010) <doi:10.1017/S0373463309990415>.
| Version: | 0.1.7 |
| Imports: | magrittr,pracma |
| Suggests: | bookdown,covr,geosphere,knitr,png,rmarkdown,spelling,testthat |
| Published: | 2025-12-13 |
| DOI: | 10.32614/CRAN.package.nvctr |
| Author: | Enrico Spinielli [aut, cre], EUROCONTROL [cph, fnd] |
| Maintainer: | Enrico Spinielli <enrico.spinielli at eurocontrol.int> |
| BugReports: | https://github.com/euctrl-pru/nvctr/issues |
| License: | MIT + fileLICENSE |
| URL: | https://nvctr.ansperformance.eu,https://github.com/euctrl-pru/nvctr |
| NeedsCompilation: | no |
| Language: | en-US |
| Materials: | README,NEWS |
| CRAN checks: | nvctr results |
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