| type (rdf:type) | LonLatProjection (geosrs:LonLatProjection) [x] |
| comment (rdfs:comment) | Longitude is referenced to the Paris meridian. The conversion method is a good approximation (better than 5cm) to original formula (see proj code 1986 (...)1) within a few hundred km of origin, but farther away the approximation may be no better than 1m. |
| label (rdfs:label) | "Laborde Grid approximation: Hotine Oblique Mercator (variant B) (rdf:langString) (iso6391:en) |
| image (foaf:image) | https://situx.github.io/proj4rdf/projections/LonLatProjection.svg (xmls:anyURI) |
| accuracy (geosrs:accuracy) | -1.0 (xmls:double) |
| Angle from Rectified to Skew Grid (geosrs:angleFromRectifiedToSkewGrid) | 21.0 (xmls:double) |
| area_of_use (geosrs:area_of_use) | Madagascar - onshore and nearshore. (geoepsg:Laborde_Grid_approximation_area_of_use) |
| asProj4 (geosrs:asProj4) | - +proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=grad +xy_out=rad +step +inv +proj=longlat +ellps=intl +pm=paris +step +proj=omerc +lat_0=-18.9 +lonc=44.1 +alpha=18.9 +gamma=18.9 +k=0.9995 +x_0=400000 +y_0=800000 +ellps=intl +pm=paris (xsd:string)
- +proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=grad +xy_out=rad +step +inv +proj=longlat +ellps=intl +pm=paris +step +proj=omerc +lat_0=-18.9 +lonc=44.1 +alpha=18.9 +gamma=18.9 +k=0.9995 +x_0=400000 +y_0=800000 +ellps=intl +pm=paris +step +proj=axisswap +order=2,1 (xsd:string)
|
| asProjJSON (geosrs:asProjJSON) | {'$schema':'https://proj.org/schemas/v0.7/projjson.schema.json','type':'Conversion','name':'Laborde Grid approximation','method':{'name':'Hotine Oblique Mercator (variant B)','id':{'authority':'EPSG','code':9815}},'parameters':[{'name':'Latitude of projection centre','value':-21,'unit':{'type':'AngularUnit','name':'grad','conversion_factor':0.0157079632679489},'id':{'authority':'EPSG','code':8811}},{'name':'Longitude of projection centre','value':49,'unit':{'type':'AngularUnit','name':'grad','conversion_factor':0.0157079632679489},'id':{'authority':'EPSG','code':8812}},{'name':'Azimuth at projection centre','value':21,'unit':{'type':'AngularUnit','name':'grad','conversion_factor':0.0157079632679489},'id':{'authority':'EPSG','code':8813}},{'name':'Angle from Rectified to Skew Grid','value':21,'unit':{'type':'AngularUnit','name':'grad','conversion_factor':0.0157079632679489},'id':{'authority':'EPSG','code':8814}},{'name':'Scale factor at projection centre','value':0.9995,'unit':'unity','id':{'authority':'EPSG','code':8815}},{'name':'Easting at projection centre','value':400000,'unit':'metre','id':{'authority':'EPSG','code':8816}},{'name':'Northing at projection centre','value':800000,'unit':'metre','id':{'authority':'EPSG','code':8817}}],'id':{'authority':'EPSG','code':19911}} (xsd:string) |
| asWKT (geosrs:asWKT) | CONVERSION['Laborde Grid approximation',METHOD['Hotine Oblique Mercator (variant B)',ID['EPSG',9815]],PARAMETER['Latitude of projection centre',-21,AN (...)GLEUNIT['grad',0.0157079632679489],ID['EPSG',8811]],PARAMETER['Longitude of projection centre',49,ANGLEUNIT['grad',0.0157079632679489],ID['EPSG',8812]],PARAMETER['Azimuth at projection centre',21,ANGLEUNIT['grad',0.0157079632679489],ID['EPSG',8813]],PARAMETER['Angle from Rectified to Skew Grid',21,ANGLEUNIT['grad',0.0157079632679489],ID['EPSG',8814]],PARAMETER['Scale factor at projection centre',0.9995,SCALEUNIT['unity',1],ID['EPSG',8815]],PARAMETER['Easting at projection centre',400000,LENGTHUNIT['metre',1],ID['EPSG',8816]],PARAMETER['Northing at projection centre',800000,LENGTHUNIT['metre',1],ID['EPSG',8817]],ID['EPSG',19911]] |
| Azimuth at projection centre (geosrs:azimuthAtProjectionCentre) | 21.0 (xmls:double) |
| Easting at projection centre (geosrs:eastingAtProjectionCentre) | 400000.0 (xmls:double) |
| has_ballpark_transformation (geosrs:has_ballpark_transformation) | false (xmls:boolean) |
| Latitude of projection centre (geosrs:latitudeOfProjectionCentre) | -21.0 (xmls:double) |
| Longitude of projection centre (geosrs:longitudeOfProjectionCentre) | 49.0 (xmls:double) |
| method_name (geosrs:method_name) | Hotine Oblique Mercator (variant B) (xsd:string) |
| Northing at projection centre (geosrs:northingAtProjectionCentre) | 800000.0 (xmls:double) |
| Scale factor at projection centre (geosrs:scaleFactorAtProjectionCentre) | 0.9995 (xmls:double) |
| scope (geosrs:scope) | Topographic mapping (medium scale). (xmls:string) |
| Is member (rdfs:member) of | LonLatProjection Instances Collection (geoepsg:LonLatProjection_collection) |
| Is conversion (geosrs:conversion) of | |
