| type (rdf:type) | MercatorProjection (geosrs:MercatorProjection) [x] |
| comment (rdfs:comment) | Grid origin is Partiridge Hill triangulation station (old trig '2'). (xmls:string) |
| label (rdfs:label) | "Hong Kong 1980 Grid: Transverse Mercator (rdf:langString) (iso6391:en) |
| image (foaf:image) | https://situx.github.io/proj4rdf/projections/MercatorProjection.svg (xmls:anyURI) |
| accuracy (geosrs:accuracy) | -1.0 (xmls:double) |
| area_of_use (geosrs:area_of_use) | China - Hong Kong - onshore and offshore. (geoepsg:Hong_Kong_1980_Grid_area_of_use) |
| asProj4 (geosrs:asProj4) | +proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=tmerc +lat_0=22.3121333333333 +lon_0=114.178555555556 +k=1 +x_0=836694.05 +y_0=819069.8 +ellps=intl +step +proj=axisswap +order=2,1 (xsd:string) |
| asProjJSON (geosrs:asProjJSON) | {'$schema':'https://proj.org/schemas/v0.7/projjson.schema.json','type':'Conversion','name':'Hong Kong 1980 Grid','method':{'name':'Transverse Mercator','id':{'authority':'EPSG','code':9807}},'parameters':[{'name':'Latitude of natural origin','value':22.3121333333333,'unit':'degree','id':{'authority':'EPSG','code':8801}},{'name':'Longitude of natural origin','value':114.178555555556,'unit':'degree','id':{'authority':'EPSG','code':8802}},{'name':'Scale factor at natural origin','value':1,'unit':'unity','id':{'authority':'EPSG','code':8805}},{'name':'False easting','value':836694.05,'unit':'metre','id':{'authority':'EPSG','code':8806}},{'name':'False northing','value':819069.8,'unit':'metre','id':{'authority':'EPSG','code':8807}}],'id':{'authority':'EPSG','code':19978}} (xsd:string) |
| asWKT (geosrs:asWKT) | CONVERSION['Hong Kong 1980 Grid',METHOD['Transverse Mercator',ID['EPSG',9807]],PARAMETER['Latitude of natural origin',22.3121333333333,ANGLEUNIT['degr (...)ee',0.0174532925199433],ID['EPSG',8801]],PARAMETER['Longitude of natural origin',114.178555555556,ANGLEUNIT['degree',0.0174532925199433],ID['EPSG',8802]],PARAMETER['Scale factor at natural origin',1,SCALEUNIT['unity',1],ID['EPSG',8805]],PARAMETER['False easting',836694.05,LENGTHUNIT['metre',1],ID['EPSG',8806]],PARAMETER['False northing',819069.8,LENGTHUNIT['metre',1],ID['EPSG',8807]],ID['EPSG',19978]] |
| False easting (geosrs:falseEasting) | 836694.1 (xmls:double) |
| False northing (geosrs:falseNorthing) | 819069.8 (xmls:double) |
| has_ballpark_transformation (geosrs:has_ballpark_transformation) | false (xmls:boolean) |
| Latitude of natural origin (geosrs:latitudeOfNaturalOrigin) | 22.31213 (xmls:double) |
| Longitude of natural origin (geosrs:longitudeOfNaturalOrigin) | 114.1786 (xmls:double) |
| method_name (geosrs:method_name) | Transverse Mercator (xsd:string) |
| Scale factor at natural origin (geosrs:scaleFactorAtNaturalOrigin) | 1.0 (xmls:double) |
| scope (geosrs:scope) | Cadastre, engineering survey, topographic mapping (large scale). (xmls:string) |
| Is member (rdfs:member) of | MercatorProjection Instances Collection (geoepsg:MercatorProjection_collection) |
| Is conversion (geosrs:conversion) of | Hong Kong 1980 Grid System (geoepsg:2326) |
