# ar_ign_README.txt

The files in this section result from the conversion of datasets originating
from [IGN](https://www.ign.gob.ar/)

## Included grids

### Argentinian vertical grid:

*Source*: [IGN](https://www.ign.gob.ar/NuestrasActividades/Geodesia/Geoide-Ar16/DocumentacionTecnica)
*Format*: GeoTIFF converted from 'AAIGrid' (adjusted)
*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/)
*Credit*: (c) Instituto Geográfico Nacional - Argentina
*Horizontal CRS*: EPSG:5342 (POSGAR 2007)

Vertical transformation for Geoid model GEOIDE-Ar16. Used to make the transition
from heights in vertical CRS SRVN16 height (EPSG:9255)
to heights above the ellipsoid in POSGAR 2007 (EPSG:5342).

* ar_ign_GEOIDE-Ar16.tif