no_kv_HREF2018B_NN54_NN2000.tif, vertical transformation from NN54 to NN2000 height

[himsve]

Cause of all the merge messes I had a new PR for #148. #148 is closed.

[rouault]

@himsve As this grid is about a vertical shift between 2 vertical CRS, the use of TYPE=VERTICAL_OFFSET_GEOGRAPHIC_TO_VERTICAL and geoid_undulation for the band description is not appropriate. You may recreate it with "vertoffset_grid_to_gtiff.py --type VERTICAL_TO_VERTICAL --source-crs EPSG:5776 --target-crs EPSG:5941 --interpolation-crs EPSG:4937" if you use vertoffset_grid_to_gtiff.py
If you create it manually, here's an example of another similar grid to take inspiration from:

$ gdalinfo /home/even/proj/PROJ-data/nz_linz/nz_linz_stisht1977-nzvd2016.tif
Driver: GTiff/GeoTIFF
Files: /home/even/proj/PROJ-data/nz_linz/nz_linz_stisht1977-nzvd2016.tif
Size is 49, 31
Coordinate System is:
GEOGCRS["NZGD2000",
    DATUM["New Zealand Geodetic Datum 2000",
        ELLIPSOID["GRS 1980",6378137,298.257222101004,
            LENGTHUNIT["metre",1]]],
    PRIMEM["Greenwich",0,
        ANGLEUNIT["degree",0.0174532925199433]],
    CS[ellipsoidal,2],
        AXIS["geodetic latitude (Lat)",north,
            ORDER[1],
            ANGLEUNIT["degree",0.0174532925199433]],
        AXIS["geodetic longitude (Lon)",east,
            ORDER[2],
            ANGLEUNIT["degree",0.0174532925199433]],
    ID["EPSG",4167]]
Data axis to CRS axis mapping: 2,1
Origin = (167.183333333333337,-46.483333333333334)
Pixel Size = (0.033333333333333,-0.033333333333333)
Metadata:
  TIFFTAG_IMAGEDESCRIPTION=NZVD2016 height (EPSG:7839) to Stewart Island 1977 height (EPSG:5772). Converted from stisht1977-nzvd2016.gtx (last modified at 2020/01/12)
  TIFFTAG_DATETIME=2020:02:02 00:00:00
  TIFFTAG_COPYRIGHT=Derived from work by Land Information New Zealand. Creative Commons Attribution 4.0 International licence https://creativecommons/licenses/by/4.0/
  area_of_use=New Zealand - Stewart Island
  source_crs_epsg_code=7839
  target_crs_epsg_code=5772
  TYPE=VERTICAL_OFFSET_VERTICAL_TO_VERTICAL
  AREA_OR_POINT=Point
Image Structure Metadata:
  COMPRESSION=DEFLATE
  INTERLEAVE=BAND
  PREDICTOR=3
Corner Coordinates:
Upper Left  ( 167.1833333, -46.4833333) (167d11' 0.00"E, 46d29' 0.00"S)
Lower Left  ( 167.1833333, -47.5166667) (167d11' 0.00"E, 47d31' 0.00"S)
Upper Right ( 168.8166667, -46.4833333) (168d49' 0.00"E, 46d29' 0.00"S)
Lower Right ( 168.8166667, -47.5166667) (168d49' 0.00"E, 47d31' 0.00"S)
Center      ( 168.0000000, -47.0000000) (168d 0' 0.00"E, 47d 0' 0.00"S)
Band 1 Block=49x31 Type=Float32, ColorInterp=Gray
  Description = vertical_offset
  Unit Type: metre

[rouault]

@himsve little ping w.r.t. my above comments