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README.md

es_ign_README.txt

The files in this section result from the conversion of datasets originating from IGN

Included grids

Spanish (Spain - mainland and Balearic Islands) horizontal ED50 to ETRS89 grid:

Source: IGN Spain, actually retrieved from https://github.com/oscarfonts/geocalc/blob/master/src/main/resources/org/geotools/referencing/factory/gridshift/SPED2ETV2.gsb?raw=true
Format: GeoTIFF converted from NTv2 (with Baleares grid put first to be used in priority for points falling into it)
License: Derivated from Original IGN Data www.ign.es CC-BY 4.0. Politica de datos
Source CRS: EPSG:4230 (ED50)
Target CRS: EPSG:4258 (ETRS89)
Used by: EPSG:15932 Transformation

  • es_ign_SPED2ETV2.tif

Spanish (Spain - mainland and Balearic Islands) vertical grid:

Source: IGN Spain
Converter: vertoffset_grid_to_gtiff.py
Format: GeoTIFF convered from 'Arc/Info ASCII Grid'
License: Derivated from Original IGN Data www.ign.es CC-BY 4.0. Politica de datos
Horizontal CRS: EPSG:4937 (ETRS89)

Vertical transformation for Geoid model EGM08-REDNAP. Used to make the transitions from heights in vertical CRS (EPSG:5782) to heights above the ellipsoid in ETRS89 (EPSG:4937).

  • es_ign_egm08-rednap.tif

Spanish (Spain - Canary Islands) vertical grid:

Source: IGN Spain
Converter: vertoffset_grid_to_gtiff.py
Format: GeoTIFF convered from 'Arc/Info ASCII Grid'
License: Derivated from Original IGN Data www.ign.es CC-BY 4.0. Politica de datos
Horizontal CRS: EPSG:4080 (REGCAN95)

Vertical transformation for Geoid model EGM08-REDNAP_Canarias. Used to make the transitions from heights in vertical CRS (EPSG:9397 -Gran Canaria- and also the other Canary islands) to heights above the ellipsoid in REGCAN95 (EPSG:4080).

  • es_ign_egm08-rednap-canarias.tif