| accuracy | -1.0 (xmls:double) |
| area_of_use | United Kingdom (UK) - HS2 phases 1 and 2a railway corridor from London to Birmingham, Lichfield and Crewe. (geoepsg:HS2-TM_area_of_use) |
| asProj4 | +proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=tmerc +lat_0=52.3 +lon_0=-1.5 +k=1 +x_0=1988 (...)73.0046 +y_0=375064.3871 +ellps=GRS80 |
| asProjJSON | {'$schema':'https://proj.org/schemas/v0.2/projjson.schema.json','type':'Conversion','name':'HS2-TM','method':{'name':'Transverse Mercator','id':{'auth (...)ority':'EPSG','code':9807}},'parameters':[{'name':'Latitude of natural origin','value':52.3,'unit':'degree','id':{'authority':'EPSG','code':8801}},{'name':'Longitude of natural origin','value':-1.5,'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':198873.0046,'unit':'metre','id':{'authority':'EPSG','code':8806}},{'name':'False northing','value':375064.3871,'unit':'metre','id':{'authority':'EPSG','code':8807}}],'id':{'authority':'EPSG','code':9301}} |
| asWKT | CONVERSION['HS2-TM',METHOD['Transverse Mercator',ID['EPSG',9807]],PARAMETER['Latitude of natural origin',52.3,ANGLEUNIT['degree',0.0174532925199433],I (...)D['EPSG',8801]],PARAMETER['Longitude of natural origin',-1.5,ANGLEUNIT['degree',0.0174532925199433],ID['EPSG',8802]],PARAMETER['Scale factor at natural origin',1,SCALEUNIT['unity',1],ID['EPSG',8805]],PARAMETER['False easting',198873.0046,LENGTHUNIT['metre',1],ID['EPSG',8806]],PARAMETER['False northing',375064.3871,LENGTHUNIT['metre',1],ID['EPSG',8807]],ID['EPSG',9301]] |
| has_ballpark_transformation | false (xmls:boolean) |
| method_name | Transverse Mercator (xsd:string) |
| parameter | |
| usage | Engineering survey for HS2 project phases 1 and 2a (xmls:string) |
| type (rdf:type) | mercator projection (geoepsg:MercatorProjection) |
| comment (rdfs:comment) | In conjunction with transformation HS2TN15 (code 9302) emulates the zero-distortion Snake projection HS2P1+14. Emulation derived at 350,000 locations, (...) RMS position difference is 0.15 mm and max position difference is 0.6 mm; this is considered errorless. |
| label (rdfs:label) | HS2-TM: Transverse Mercator (rdf:langString) (iso6391:en) |
| Is coordinate operation of | HS2 Survey Grid (geoepsg:9300) |