diff options
| author | Even Rouault <even.rouault@spatialys.com> | 2019-12-18 14:28:57 +0100 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2019-12-18 14:28:57 +0100 |
| commit | 19a7e6a610f084b87cf1501418633e6adf222db8 (patch) | |
| tree | 5236142bfaf2f7c7ffa3acea3206bec76078b2a7 /is_lmi | |
| parent | 38ab362b2ebef59e361878b0732bf7555b09af2e (diff) | |
| download | PROJ-data-19a7e6a610f084b87cf1501418633e6adf222db8.tar.gz PROJ-data-19a7e6a610f084b87cf1501418633e6adf222db8.zip | |
Add is_lmi/ for Iceland
Diffstat (limited to 'is_lmi')
| l--------- | is_lmi/.github/README.md | 1 | ||||
| -rw-r--r-- | is_lmi/ISL | 470 | ||||
| -rw-r--r-- | is_lmi/ISN2004_ISN2016.tif | bin | 0 -> 577949 bytes | |||
| -rw-r--r-- | is_lmi/ISN93_ISN2016.tif | bin | 0 -> 564838 bytes | |||
| -rw-r--r-- | is_lmi/Icegeoid_ISN2004.tif | bin | 0 -> 453855 bytes | |||
| -rw-r--r-- | is_lmi/Icegeoid_ISN2016.tif | bin | 0 -> 485309 bytes | |||
| -rw-r--r-- | is_lmi/Icegeoid_ISN93.tif | bin | 0 -> 484419 bytes | |||
| -rw-r--r-- | is_lmi/README.is_lmi | 97 |
8 files changed, 568 insertions, 0 deletions
diff --git a/is_lmi/.github/README.md b/is_lmi/.github/README.md new file mode 120000 index 0000000..f4452fd --- /dev/null +++ b/is_lmi/.github/README.md @@ -0,0 +1 @@ +../README.is_lmi
\ No newline at end of file diff --git a/is_lmi/ISL b/is_lmi/ISL new file mode 100644 index 0000000..abcefd6 --- /dev/null +++ b/is_lmi/ISL @@ -0,0 +1,470 @@ +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ +# +# PROJ implementations of current and legacy Icelandic coordinate systems +# +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ +# +# It is the official definition and implementation of transformations between different Iceland's systems. +# +# +# +# Revision history: +# ----------------- +# +# 2019-11-30 Initial setup. +# Dalia Prizginiene <dalia@lmi.is> +# +# +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# +<metadata> +version=1.0.0 +origin=LMI +lastupdate=2019-11-30 +# +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# Vertical datum +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISH2004> proj=vgridshift grids=Icegeoid_ISN2004.gtx # current, geoid height calculated using ISN2004 datum +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<ISN93_ISH2004> proj=vgridshift grids=Icegeoid_ISN93.gtx # Icegeoid_ISN2004.gtx plus corrections for vertical difference between ISN93 and ISN2004. +<ISN2016_ISH2004> proj=vgridshift grids=Icegeoid_ISN2016.gtx # Icegeoid_ISN2004.gtx plus corrections for vertical difference between ISN2016 and ISN2004. + +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# Deformation grids +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<ISN93_16h> proj=hgridshift grids=ISN93_ISN2016.gsb +<ISN93_16v> proj=vgridshift grids=ISN93_ISN2016.gtx + +<ISN04_16h> proj=hgridshift grids=ISN2004_ISN2016.gsb +<ISN04_16v> proj=vgridshift grids=ISN2004_ISN2016.gtx + +<D_93_16> + proj=pipeline + step init=ISL:ISN93_16h + step inv init=ISL:ISN93_16v + +<D_04_16> + proj=pipeline + step init=ISL:ISN04_16h + step inv init=ISL:ISN04_16v + +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# Velocity model +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# +# xy_grids=ISN_vel_beta.ct2 +# z_grids=ISN_vel_beta.gtx +# +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + + +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# LCC ISN2016 (epoch 2016.5, IGS2014, GRS80): The primary system +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<ISN2016_LAM> proj=lcc lat_1=64.25 lat_2=65.75 lat_0=65 lon_0=-19 x_0=2700000 y_0=300000 ellps=GRS80 + +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN2016_LAM +tolerance 0.1 mm +accept -17 66 +expect 2790800.4329 412932.6164 +</gie> + + +#----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# LCC ISN2004 (epoch 2004.6, IGb00, GRS80): The other systems +#----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<ISN2004_LAM> proj=lcc lat_1=64.25 lat_2=65.75 lat_0=65 lon_0=-19 x_0=1700000 y_0=300000 ellps=GRS80 + +#----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN2004_LAM +tolerance 0.1 mm +accept -17 66 +expect 1790800.4329 412932.6164 +</gie> + + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ +# LCC ISN93 (epoch 1993.6, ITRF93, GRS80): The other systems +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ +<ISN93_LAM> proj=lcc lat_1=64.25 lat_2=65.75 lat_0=65 lon_0=-19 x_0=500000 y_0=500000 ellps=GRS80 + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ +<gie> +operation init=ISL:ISN93_LAM +tolerance 0.1 mm +accept -17 66 +expect 590800.4329 612932.6164 +</gie> + + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# LCC Hjorsey1955 (ellipsoid: International 1924): The historical systems 2D +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<HJORSEY_LAM> + proj=pipeline + step proj=lcc lat_1=65 lat_0=65 lon_0=-18 x_0=-500000 y_0=500000 ellps=intl + step proj=axisswap order=-1,2,3,4 + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:HJORSEY_LAM +tolerance 0.1 mm +accept -17 66 +expect 454587.8410 611870.0974 +</gie> + +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# LCC Reykjavik1900 (ellipsoid: Danish): The historical systems 2D +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<RJ_LAM> proj=lcc lat_1=65 lat_0=65 lon_0=-19.022125 x_0=0 y_0=0 ellps=danish + +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:RJ_LAM +tolerance 0.1 mm +accept -17 66 +expect 91794.9450 112953.3882 +</gie> + +#--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# LCC for Kinematic datum shifting/ dynamic transformation +#--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<KIN_LAM> proj=lcc lat_1=64.25 lat_2=65.75 lat_0=65 lon_0=-19 x_0=4700000 y_0=300000 ellps=GRS80 +#--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:KIN_LAM +tolerance 3 cm +accept -17 66 0 2017.5 +expect 4790800.4329 412932.6164 +</gie> + +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# Helmert transformations +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# Helmert transformations are used to transform between Reykjavik1900 2D and ISN93 2D also between Hjorsey1955 2D and ISN93 2D +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<REYK19_ISN93> proj=helmert convention=coordinate_frame x=556.620 y=-167.901 z=945.664 rx=4.154 ry=-0.269 rz=-2.279 s=-3.729 +<HJ_ISN93> proj=helmert x=-72.4 y=46.8 z=-82.7 +<REYK19_HJ> proj=helmert convention=coordinate_frame x=629.020 y=-214.701 z=1028.364 rx=4.154 ry=-0.269 rz=-2.279 s=-3.729 +# +# +#----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# Actual transformations +#----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# +#----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# Reykjavik1900 (Geodetic) 2D -> ISN93 (LCC) 2D +#----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# from west of Greenwich +<RJ_G> + proj=pipeline + step proj=push +v_3 + step proj=cart ellps=danish + step init=ISL:REYK19_ISN93 + step proj=cart inv ellps=GRS80 + step proj=pop +v_3 + step init=ISL:ISN93_LAM + +# Example: +# echo -21.930875 64.1421888889 0 0 | cct init=ISL:RJ_G + +# from west of Copenhagen +<RJ_W> + proj=pipeline + step inv proj=longlat pm=copenhagen + step proj=push +v_3 + step proj=cart ellps=danish + step init=ISL:REYK19_ISN93 + step proj=cart inv ellps=GRS80 + step proj=pop +v_3 + step init=ISL:ISN93_LAM + +# Example: +# echo -34.50875 64.1421888889 0 0 | cct init=ISL:RJ_W +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ +<gie> +operation init=ISL:RJ_G +tolerance 50 m +accept -21.930875 64.1421888889 0 +expect 357557.5871 407700.8896 0 +</gie> +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ +<gie> +operation init=ISL:RJ_W +tolerance 50 m +accept -34.50875 64.1421888889 0 +expect 357557.5871 407700.8896 0 +</gie> +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# Hjorsey1955 (Geodetic) 2D -> ISN93 (LCC) 2D +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<HJORSEY_ISN93> + proj=pipeline + step proj=push +v_3 + step proj=cart ellps=intl + step init=ISL:HJ_ISN93 + step proj=cart inv ellps=GRS80 + step proj=pop +v_3 + step init=ISL:ISN93_LAM + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:HJORSEY_ISN93 +tolerance 15 m +accept -21.9933555556 64.1533913888889 0 +expect 354399.1771 409035.1420 0 +</gie> +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN93 (Geodetic) 3D -> ISN2004 (LCC) 3D +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN93_ISN04> + proj=pipeline + step init=ISL:D_93_16 + step inv init=ISL:D_04_16 + step init=ISL:ISN2004_LAM + +# Example: +# echo -17.981614272222 66.5274148361111 75.737 0 | cct init=ISL:ISN93_ISN04 +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN93_ISN04 +tolerance 5 cm +accept -17.981614272222 66.5274148361111 75.737 0 +expect 1745293.041 470683.539 75.653 +</gie> + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN93 (LCC) 3D -> ISN2004 (LCC) 3D +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN93_L_ISN04> + proj=pipeline + step inv init=ISL:ISN93_LAM + step init=ISL:D_93_16 + step inv init=ISL:D_04_16 + step init=ISL:ISN2004_LAM + +# Example: +# echo 545293.098 670683.324 75.737 0 | cct init=ISL:ISN93_L_ISN04 +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN93_L_ISN04 +tolerance 5 cm +accept 545293.098 670683.324 75.737 0 +expect 1745293.0413 470683.5387 75.6532 +</gie> + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN93 (Geodetic) 3D -> ISN2004 (Geodetic + Vertical datum) +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN93_ISN04_v> + proj=pipeline + step init=ISL:D_93_16 + step inv init=ISL:D_04_16 + step init=ISL:ISH2004 + +# Example: +# echo -17.981614272222 66.5274148361111 75.737 0 | cct init=ISL:ISN93_ISN04_v +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN93_ISN04_v +tolerance 5 cm +accept -17.981614272222 66.5274148361111 75.737 0 +expect -17.9816154690 66.5274167690 11.6147 +</gie> + +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN2004 (Geodetic) 3D -> ISN2016 (LCC) 3D +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN04_ISN16> + proj=pipeline + step init=ISL:D_04_16 + step init=ISL:ISN2016_LAM + +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN04_ISN16 +tolerance 5 cm +accept -17.98161545 66.5274167694444 75.653 0 +expect 2745292.997 470683.7597 75.618 +</gie> + +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN2004 (LCC) 3D -> ISN2016 (LCC) 3D +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN04_L_ISN16> + proj=pipeline + step inv init=ISL:ISN2004_LAM + step init=ISL:D_04_16 + step init=ISL:ISN2016_LAM + +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN04_L_ISN16 +tolerance 5 cm +accept 1745293.042 470683.539 75.653 0 +expect 2745292.9970 470683.7595 75.6182 +</gie> + +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN2004 (Geodetic) 3D -> ISN2016 (Geodetic + Vertical datum) +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN04_ISN16_v> + proj=pipeline + step init=ISL:ISN04_16h + step init=ISL:ISH2004 + +# Example: +# echo -17.98161545 66.5274167694444 75.653 0 | cct init=ISL:ISN04_ISN16_v +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN04_ISN16_v +tolerance 5 cm +accept -17.98161545 66.5274167694444 75.653 0 +expect -17.9816163818 66.5274187527 11.6145 +</gie> + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN93 (Geodetic) 3D -> ISN2016 (LCC) 3D +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN93_ISN16> + proj=pipeline + step init=ISL:D_93_16 + step init=ISL:ISN2016_LAM + +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN93_ISN16 +tolerance 5 cm +accept -17.981614272222 66.5274148361111 75.737 0 +expect 2745292.996 470683.760 75.618 +</gie> + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN93 (LCC) 3D -> ISN2016 (LCC) 3D +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN93_L_ISN16> + proj=pipeline + step inv init=ISL:ISN93_LAM + step init=ISL:D_93_16 + step init=ISL:ISN2016_LAM + +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN93_L_ISN16 +tolerance 5 cm +accept 545293.098 670683.324 75.737 0 +expect 2745292.996 470683.759 75.618 +</gie> + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN93 (Geodetic) 3D -> ISN2016 (Geodetic + Vertical datum) +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN93_ISN16_v> + proj=pipeline + step init=ISL:D_93_16 + step init=ISL:ISN04_16v + step init=ISL:ISH2004 + +# Example: +# echo -17.981614272222 66.5274148361111 75.737 0 | cct init=ISL:ISN93_ISN16_v +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN93_ISN16_v +tolerance 5 cm +accept -17.981614272222 66.5274148361111 75.737 0 +expect -17.9816164008 66.5274187522 11.6147 +</gie> + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# LCC ISN93 3D -> ISN93 (Geodetic + Vertical datum) +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN93_ISH2004_v> + proj=pipeline + step inv init=ISL:ISN93_LAM + step init=ISL:ISN93_ISH2004 + +# Example: +# echo 545293.098 670683.324 75.737 0 | cct init=ISL:ISN93_ISH2004_v +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN93_ISH2004_v +tolerance 5 cm +accept 545293.098 670683.324 75.737 0 +expect -17.9816142725 66.5274148323 11.6147 +</gie> + +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# LCC ISN2016 3D -> ISN2016 (Geodetic + Vertical datum) +#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<ISN2016_ISH2004_v> + proj=pipeline + step inv init=ISL:ISN2016_LAM + step init=ISL:ISN2016_ISH2004 + +# Example: +# echo 2745292.998 470683.759 75.618 0 | cct init=ISL:ISN2016_ISH2004_v +#-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +<gie> +operation init=ISL:ISN2016_ISH2004_v +tolerance 5 cm +accept 2745292.998 470683.759 75.618 0 +expect -17.9816163630 66.5274187459 11.6143 +</gie> + +#--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN_DRF (Geodetic): epoch 2018.679 -> ISN_DRF (LCC): epoch 2017.5 3D +#--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<DRF_E> + proj=pipeline + step proj=cart ellps=GRS80 + step proj=deformation dt=-1.179 xy_grids=ISN_vel_beta.ct2 z_grids=ISN_vel_beta.gtx + step proj=cart inv ellps=GRS80 + step init=ISL:KIN_LAM + +# Example: +# echo -18.1224832715 65.6854274786 134.2043 | cct init=ISL:DRF_E +#--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<gie> +operation init=ISL:DRF_E +tolerance 3 cm +accept -18.1224832715 65.6854274786 134.2043 +expect 4740331.7212 376698.7742 134.2005 +</gie> + +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +# ISN_DRF (Geodetic): epoch 2018.679 -> ISN2016 (LCC) 3D +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<DRF_2016> + proj=pipeline + step proj=cart ellps=GRS80 + step proj=deformation dt=-2.179 xy_grids=ISN_vel_beta.ct2 z_grids=ISN_vel_beta.gtx + step proj=cart inv ellps=GRS80 + step init=ISL:ISN2016_LAM + +# Example: +# echo -18.1224832715 65.6854274786 134.2043 | cct init=ISL:DRF_2016 +#---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + +<gie> +operation init=ISL:DRF_2016 +tolerance 3 cm +accept -18.1224832715 65.6854274786 134.2043 +expect 2740331.7315 376698.7505 134.1972 +</gie> diff --git a/is_lmi/ISN2004_ISN2016.tif b/is_lmi/ISN2004_ISN2016.tif Binary files differnew file mode 100644 index 0000000..3ff07f6 --- /dev/null +++ b/is_lmi/ISN2004_ISN2016.tif diff --git a/is_lmi/ISN93_ISN2016.tif b/is_lmi/ISN93_ISN2016.tif Binary files differnew file mode 100644 index 0000000..48afcd1 --- /dev/null +++ b/is_lmi/ISN93_ISN2016.tif diff --git a/is_lmi/Icegeoid_ISN2004.tif b/is_lmi/Icegeoid_ISN2004.tif Binary files differnew file mode 100644 index 0000000..fad3c6f --- /dev/null +++ b/is_lmi/Icegeoid_ISN2004.tif diff --git a/is_lmi/Icegeoid_ISN2016.tif b/is_lmi/Icegeoid_ISN2016.tif Binary files differnew file mode 100644 index 0000000..c24075e --- /dev/null +++ b/is_lmi/Icegeoid_ISN2016.tif diff --git a/is_lmi/Icegeoid_ISN93.tif b/is_lmi/Icegeoid_ISN93.tif Binary files differnew file mode 100644 index 0000000..b915d2c --- /dev/null +++ b/is_lmi/Icegeoid_ISN93.tif diff --git a/is_lmi/README.is_lmi b/is_lmi/README.is_lmi new file mode 100644 index 0000000..68dfb98 --- /dev/null +++ b/is_lmi/README.is_lmi @@ -0,0 +1,97 @@ +# README.is_lmi + +The files in this section result from the conversion of datasets originating +from [National Land Survey of Iceland](https://atlas.lmi.is/LmiData/index.php?id=626468364600) + +## Included grids + +### Iceland: ISN93 -> ISN2016 + +2D geodetic transformation from Iceland Datum ISN93 to Iceland Datum ISN2016 + +*Source*: [National Land Survey of Iceland](https://atlas.lmi.is/LmiData/index.php?id=626468364600) +*Format*: NTv2 +*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/) +*Credit*: (c)2017-2019 Grid created by Guðmundur Valsson. + +The transformation is designed so that the ISN2016 points should fit within 1-2 cm accuracy, but in the area around the earthquake area in the South and North of Vatnajökull the accuracy is worse. + +Recommended to transform from ISN93 2D geodetic (EPSG:4659) to ISN2016 2D geodetic (EPSG:8086), also this transformation has code in EPSG Dataset (EPSG:9232) + +* ISN93_ISN2016.tif + +### Iceland: ISN2004 -> ISN2016 + +2D geodetic transformation from Iceland Datum ISN2004 to Iceland Datum ISN2016 + +*Source*: [National Land Survey of Iceland](https://atlas.lmi.is/LmiData/index.php?id=626468364600) +*Format*: NTv2 +*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/) +*Credit*: (c)2017-2019 Grid created by Guðmundur Valsson. + +The transformation is designed so that the ISN2016 points should fit within 1-2 cm accuracy, but in the area around the earthquake area in the South and North of Vatnajökull the accuracy is worse. + +Recommended to transform from ISN2004 2D geodetic (EPSG:5324) to ISN2016 2D geodetic (EPSG:8086), also this transformation has code in EPSG Dataset (EPSG:9233) + +* ISN2004_ISN2016.tif + +### Iceland: ISN2004 ellipsoidal height -> ISH2004 vertical datum + +*Source*: [National Land Survey of Iceland](https://atlas.lmi.is/LmiData/index.php?id=626468364600) +*Format*: GTX +*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/) +*Credit*: (c)2017-2019 Grid created by Guðmundur Valsson. + +Geoid created in cooperation between the National Land Survey of Iceland and DTU Space in December 2010. +A gravimetric geoid was fitted to National Height System ISH2004 (EPSG:8089) with over 300 GNSS levelling points +with ellipsoidal height in ISN2004 (EPSG:5323). The std. of the fit was 1.7 cm. + +Grid to convert from ISN2004 ellipsoidal height (EPSG:5323) to national vertical datum ISH2004 (EPSG:8089) +The horizontal grid coordinates are referenced to ISN2004 + +See the `ISL` init-file for examples of use. + +* Icegeoid_ISN2004.tif + +### Iceland: ISN93 ellipsoidal height -> ISH2004 vertical datum + +*Source*: [National Land Survey of Iceland](https://atlas.lmi.is/LmiData/index.php?id=626468364600) +*Format*: GTX +*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/) +*Credit*: (c)2017-2019 Grid created by Guðmundur Valsson. + +Icegeoid_ISN2004.tif plus corrections for vertical difference between ISN93(EPSG:4945) and ISN2004 (EPSG:5323). + +Grid to convert from ISN93 ellipsoidal height (EPSG:4945) to national vertical datum ISH2004 (EPSG:8089) +The horizontal grid coordinates are referenced to ISN93 + +See the `ISL` init-file for examples of use. + +* Icegeoid_ISN93.tif + +### Iceland: ISN2016 ellipsoidal height -> ISH2004 vertical datum + +*Source*: [National Land Survey of Iceland](https://atlas.lmi.is/LmiData/index.php?id=626468364600) +*Format*: GTX +*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/) +*Credit*: (c)2017-2019 Grid created by Guðmundur Valsson. + +Icegeoid_ISN2004.tif plus corrections for vertical difference between ISN2016(EPSG:8085) and ISN2004 (EPSG:5323). + +Grid to convert from ISN2016 ellipsoidal height (EPSG:8085) to national vertical datum ISH2004 (EPSG:8089) +The horizontal grid coordinates are referenced to ISN2016 + +See the `ISL` init-file for examples of use. + +* Icegeoid_ISN2016.tif + +## Included init-files + +### Iceland: System definitions + +*Source*: [National Land Survey of Iceland](https://atlas.lmi.is/LmiData/index.php?id=626468364600) +*License*: [Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/) + +Init file with various transformations and conversions of relevance in Iceland. + +* ISL |