EPSG:11438

COORDINATEOPERATION["JGD2024 to JGD2011 (vertical) height (1)",
    VERSION["GSI-Jpn 2011"],
    SOURCECRS[
        GEOGCRS["JGD2024",
            DATUM["Japanese Geodetic Datum 2024",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    LENGTHUNIT["metre",1]]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,3],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["ellipsoidal height (h)",up,
                    ORDER[3],
                    LENGTHUNIT["metre",1]],
            ID["EPSG",6667]]],
    TARGETCRS[
        VERTCRS["JGD2011 (vertical) height",
            VDATUM["Japanese Geodetic Datum 2011 (vertical)"],
            CS[vertical,1],
                AXIS["gravity-related height (H)",up,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",6695]]],
    METHOD["Geographic3D to GravityRelatedHeight (ISG)",
        ID["EPSG",1117]],
    PARAMETERFILE["Geoid (height correction) model file","GSIGEO2011.isg"],
    OPERATIONACCURACY[0.03],
    USAGE[
        SCOPE["Derivation of gravity-related heights from GNSS observations."],
        AREA["Japan - onshore mainland - Hokkaido, Honshu, Shikoku, Kyushu."],
        BBOX[30.94,129.3,45.54,145.87]],
    ID["EPSG",11438],
    REMARK["Note: source CRS JGD2011 was renamed as JGD2024 with effect from 1st April 2025 to align with adoption of JGD2024 (vertical). For reversible alternative to this transformation see JGD2011 to JGD2011 + JGD2011 (vertical) height (1) (CT code 11439)."]]

proj4.defs("EPSG:11438","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=jp_gsi_gsigeo2011.tif +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "JGD2024 to JGD2011 (vertical) height (1)",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "JGD2024",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Japanese Geodetic Datum 2024",
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                },
                {
                    "name": "Ellipsoidal height",
                    "abbreviation": "h",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 6667
        },
        "remarks": "Replaces JGD2000 (CRS code 4947) with effect from 21st October 2011. On adoption of JGD2024 (vertical) with effect from 1st April 2025, the name of this geodetic CRS was changed from JGD2011 to JGD2024; there is no change of definition or of coordinate values."
    },
    "target_crs": {
        "type": "VerticalCRS",
        "name": "JGD2011 (vertical) height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Japanese Geodetic Datum 2011 (vertical)"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 6695
        }
    },
    "method": {
        "name": "Geographic3D to GravityRelatedHeight (ISG)",
        "id": {
            "authority": "EPSG",
            "code": 1117
        }
    },
    "parameters": [
        {
            "name": "Geoid (height correction) model file",
            "value": "GSIGEO2011.isg",
            "id": {
                "authority": "EPSG",
                "code": 8666
            }
        }
    ],
    "accuracy": "0.03",
    "scope": "Derivation of gravity-related heights from GNSS observations.",
    "area": "Japan - onshore mainland - Hokkaido, Honshu, Shikoku, Kyushu.",
    "bbox": {
        "south_latitude": 30.94,
        "west_longitude": 129.3,
        "north_latitude": 45.54,
        "east_longitude": 145.87
    },
    "id": {
        "authority": "EPSG",
        "code": 11438
    },
    "remarks": "Note: source CRS JGD2011 was renamed as JGD2024 with effect from 1st April 2025 to align with adoption of JGD2024 (vertical). For reversible alternative to this transformation see JGD2011 to JGD2011 + JGD2011 (vertical) height (1) (CT code 11439)."
}

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=jp_gsi_gsigeo2011.tif +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	<Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=jp_gsi_gsigeo2011.tif +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	</Layer>
</Map>

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 11438, 'EPSG', 11438, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=jp_gsi_gsigeo2011.tif +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');