degree
Engineering survey, topographic mapping.
None
United States (USA) - CONUS onshore - Alabama; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming.
Data Source: EPSG v11.016 2024-08-31
Datum: North American Datum 1927
Coordinate System: Undefined
Projection: Undefined
Geodetic CRS: Undefined
COMPOUNDCRS["NAD27 + NGVD29 height (ftUS)",
GEOGCRS["NAD27",
DATUM["North American Datum 1927",
ELLIPSOID["Clarke 1866",6378206.4,294.978698213898,
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]]],
VERTCRS["NGVD29 height (ftUS)",
VDATUM["National Geodetic Vertical Datum 1929"],
CS[vertical,1],
AXIS["gravity-related height (H)",up,
LENGTHUNIT["US survey foot",0.304800609601219]]],
USAGE[
SCOPE["Engineering survey, topographic mapping."],
AREA["United States (USA) - CONUS onshore - Alabama; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming."],
BBOX[24.41,-124.79,49.38,-66.91]],
ID["EPSG",7406]]
{
"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
"type": "CompoundCRS",
"name": "NAD27 + NGVD29 height (ftUS)",
"components": [
{
"type": "GeographicCRS",
"name": "NAD27",
"datum": {
"type": "GeodeticReferenceFrame",
"name": "North American Datum 1927",
"ellipsoid": {
"name": "Clarke 1866",
"semi_major_axis": 6378206.4,
"semi_minor_axis": 6356583.8
}
},
"coordinate_system": {
"subtype": "ellipsoidal",
"axis": [
{
"name": "Geodetic latitude",
"abbreviation": "Lat",
"direction": "north",
"unit": "degree"
},
{
"name": "Geodetic longitude",
"abbreviation": "Lon",
"direction": "east",
"unit": "degree"
}
]
}
},
{
"type": "VerticalCRS",
"name": "NGVD29 height (ftUS)",
"datum": {
"type": "VerticalReferenceFrame",
"name": "National Geodetic Vertical Datum 1929"
},
"coordinate_system": {
"subtype": "vertical",
"axis": [
{
"name": "Gravity-related height",
"abbreviation": "H",
"direction": "up",
"unit": {
"type": "LinearUnit",
"name": "US survey foot",
"conversion_factor": 0.304800609601219
}
}
]
}
}
],
"scope": "Engineering survey, topographic mapping.",
"area": "United States (USA) - CONUS onshore - Alabama; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming.",
"bbox": {
"south_latitude": 24.41,
"west_longitude": -124.79,
"north_latitude": 49.38,
"east_longitude": -66.91
},
"id": {
"authority": "EPSG",
"code": 7406
}
}
{'crs_wkt': 'COMPOUNDCRS["NAD27 + NGVD29 height '
'(ftUS)",GEOGCRS["NAD27",DATUM["North American Datum '
'1927",ELLIPSOID["Clarke '
'1866",6378206.4,294.978698213898,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]]],VERTCRS["NGVD29 '
'height (ftUS)",VDATUM["National Geodetic Vertical Datum '
'1929"],CS[vertical,1],AXIS["gravity-related height '
'(H)",up,LENGTHUNIT["US survey '
'foot",0.304800609601219]]],USAGE[SCOPE["Engineering survey, '
'topographic mapping."],AREA["United States (USA) - CONUS onshore '
'- Alabama; Arizona; Arkansas; California; Colorado; Connecticut; '
'Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; '
'Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; '
'Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; '
'Nevada; New Hampshire; New Jersey; New Mexico; New York; North '
'Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; '
'Rhode Island; South Carolina; South Dakota; Tennessee; Texas; '
'Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; '
'Wyoming."],BBOX[24.41,-124.79,49.38,-66.91]],ID["EPSG",7406]]',
'geographic_crs_name': 'NAD27',
'geopotential_datum_name': 'National Geodetic Vertical Datum 1929',
'grid_mapping_name': 'latitude_longitude',
'horizontal_datum_name': 'North American Datum 1927',
'inverse_flattening': 294.978698213898,
'longitude_of_prime_meridian': 0.0,
'prime_meridian_name': 'Greenwich',
'reference_ellipsoid_name': 'Clarke 1866',
'semi_major_axis': 6378206.4,
'semi_minor_axis': 6356583.8}