| asProjJSON | {'$schema':'https://proj.org/schemas/v0.2/projjson.schema.json','type':'GeographicCRS','name':'ITRF91','datum':{'type':'DynamicGeodeticReferenceFrame' (...),'name':'International Terrestrial Reference Frame 1991','frame_reference_epoch':1987.999999999999,'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'}]},'scope':'Geodesy.','area':'World.','bbox':{'south_latitude':-90,'west_longitude':-180,'north_latitude':90,'east_longitude':180},'id':{'authority':'EPSG','code':8991}} |
| asWKT | GEOGCRS['ITRF91',DYNAMIC[FRAMEEPOCH[1988]],DATUM['International Terrestrial Reference Frame 1991',ELLIPSOID['GRS 1980',6378137,298.257222101,LENGTHUNI (...)T['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]],USAGE[SCOPE['Geodesy.'],AREA['World.'],BBOX[-90,-180,90,180]],ID['EPSG',8991]] |