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authorEven Rouault <even.rouault@spatialys.com>2019-12-16 20:27:09 +0100
committerEven Rouault <even.rouault@spatialys.com>2019-12-16 20:27:09 +0100
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tree06bfee8273236655eb65373e966c38dcfd6d1bbe /dk_sdfe
parent9550eef8af6001ebdce4fe1a1f58a981bba45444 (diff)
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+# README.dk_sdfe
+
+The files in this section result from the conversion of datasets originating
+from [Agency for Data Supply and Efficiency](https://github.com/NordicGeodesy/NordicTransformations)
+
+## Included grids
+
+### Denmark: DVR90 heights -> ETRS89 ellipsoidal heights
+
+*Source*: [Agency for Data Supply and Efficiency](https://github.com/NordicGeodesy/NordicTransformations)
+*Format*: GeoTIFF converted from GTX
+*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/)
+
+Transform local height system DVR90 (EPSG:5799) to ETRS89 ellipsoidal heights (EPSG:4937). The horizontal
+grid coordinates are referenced to ETRS89.
+
+* dvr90.tif
+
+### Denmark: DNN heights -> ETRS89 ellipsoidal heights
+
+*Source*: [Agency for Data Supply and Efficiency](https://github.com/NordicGeodesy/NordicTransformations)
+*Format*: GeoTIFF converted from GTX
+*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/)
+
+Transform local height system DNN (EPSG:5733) to ETRS89 ellipsoidal heights (EPSG:4937). The horizontal
+grid coordinates are referenced to ETRS89.
+
+* dnn.tif
+
+### Faroe Islands: FVR09 heights -> ETRS89 ellipsoidal heights
+
+*Source*: [Agency for Data Supply and Efficiency](https://github.com/NordicGeodesy/NordicTransformations)
+*Format*: GeoTIFF converted from GTX
+*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/)
+
+Transform local height system FVR09 (EPSG:5317) to ETRS89 ellipsoidal heights (EPSG:4937). The horizontal
+grid coordinates are referenced to ETRS89.
+
+* fvr09.tif
+
+### Nordic+Baltic countries: Deformation model
+
+*Source*: [The Nordic Geodetic Commission](https://github.com/NordicGeodesy/NordicTransformations)
+*Format*: CTable2 and GTX
+*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/)
+
+Deformation model covering the Nordic and Baltic countries. Used in
+transformations between global reference frames and the local realisations
+of ETRS89 in the Nordic and Baltic countries. See the `NKG` init-file for
+examples of use.
+
+* nkgrf03vel_realigned_xy.ct2
+* nkgrf03vel_realigned_z.gtx
+
+## Included init-files
+
+### Denmark: System definitions related to ETRS89
+
+*Source*: [Agency for Data Supply and Efficiency](https://github.com/NordicGeodesy/NordicTransformations)
+*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/)
+
+Init files with various transformations and conversions of relevance in
+Denmark. All definitions in the init file uses the local ETRS89 reference
+frame as a pivot datum. More information can be found in the
+[NordicTransformations](https://github.com/NordicGeodesy/NordicTransformations)
+repository. While the `.pol` files are init-files they are not supposed to be
+by themselves. The exist purely as helper files for the `DK` init-file.
+The `.pol` files holds polynomial constants used for transformations between
+Danish legacy coordinate reference systems and ETRS89.
+
+* DK
+* DK_bornholm.pol
+* DK_bridges.pol
+* DK_general.pol
+* DK_jutland.pol
+* DK_zealand.pol
+
+### The Faroe Islands: System definitions related to ETRS89
+
+*Source*: [Agency for Data Supply and Efficiency](https://github.com/NordicGeodesy/NordicTransformations)
+*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/)
+
+Init file with various transformations and conversions of relevance in
+The Faroe Islands. All definitions in the init file uses the local ETRS89
+reference frame as a pivot datum. More information can be found in the
+[NordicTransformations](https://github.com/NordicGeodesy/NordicTransformations)
+repository.
+
+* FO
+
+### Nordic+Baltic countries: ITRFxx -> Local ETRS89 realizations
+
+*Source*: [The Nordic Geodetic Commission](https://github.com/NordicGeodesy/NordicTransformations)
+*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/)
+
+Transformations to and from the common Nordic referenc frame NKG_ETRF00.
+This init-file describes transformations between global reference frames
+and NKG_ETRF00 as well as transformations from NKG_ERTF00 to the local
+realisations of ETRS89 in each of the countries involved with NKG.
+
+All transformations in this init-file uses the common Nordic frame as a
+pivot datum. Exempt from this dogma are transformations with labels
+starting with ``_``. Those transformations are "private" to this file and are
+only used as steps in more complicated transformations.
+
+* NKG