× GeoClasses:
Search:
http://www.opengis.net/ont/crs/operation/Laborde_Grid powered by Static GeoPubby generated using the SPARQLing Unicorn QGIS Plugin OntDoc Script 0.18

Description: comment:Longitude is referenced to the Paris meridian. See Laborde Grid (Greenwich) (projection code 8440) for equivalent in degrees referenced to Greenwich. Within a few hundred km of origin, may be approximated by Oblique Mercator method - see proj code 19911.

https://situx.github.io/proj4rdf/projections/LabordeProjection.svg
PropertyValue
type (rdf:type) LabordeProjection (geosrs:LabordeProjection) [x]
comment (rdfs:comment)
Longitude is referenced to the Paris meridian. See Laborde Grid (Greenwich) (projection code 8440) for equivalent in degrees referenced to Greenwich. (...)Within a few hundred km of origin, may be approximated by Oblique Mercator method - see proj code 19911.
(xmls:string)
label (rdfs:label) "Laborde Grid: Laborde Oblique Mercator (rdf:langString) (iso6391:en)
image (foaf:image) https://situx.github.io/proj4rdf/projections/LabordeProjection.svg (xmls:anyURI)
accuracy (geosrs:accuracy) -1.0 (xmls:double)
area_of_use (geosrs:area_of_use) Madagascar - onshore and nearshore. (geoepsg:Laborde_Grid_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=labrd +lat_0=-18.9 +lon_0=44.1 +azi=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','method':{'name':'Laborde Oblique Mercator','id':{'authority':'EPSG','code':9813}},'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':'Scale factor at projection centre','value':0.9995,'unit':'unity','id':{'authority':'EPSG','code':8815}},{'name':'False easting','value':400000,'unit':'metre','id':{'authority':'EPSG','code':8806}},{'name':'False northing','value':800000,'unit':'metre','id':{'authority':'EPSG','code':8807}}],'id':{'authority':'EPSG','code':19861}} (xsd:string)
asWKT (geosrs:asWKT)
CONVERSION['Laborde Grid',METHOD['Laborde Oblique Mercator',ID['EPSG',9813]],PARAMETER['Latitude of projection centre',-21,ANGLEUNIT['grad',0.01570796 (...)32679489],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['Scale factor at projection centre',0.9995,SCALEUNIT['unity',1],ID['EPSG',8815]],PARAMETER['False easting',400000,LENGTHUNIT['metre',1],ID['EPSG',8806]],PARAMETER['False northing',800000,LENGTHUNIT['metre',1],ID['EPSG',8807]],ID['EPSG',19861]]
(geosrs:wktLiteral)
Azimuth at projection centre (geosrs:azimuthAtProjectionCentre) 21.0 (xmls:double)
False easting (geosrs:falseEasting) 400000.0 (xmls:double)
False northing (geosrs:falseNorthing) 800000.0 (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) Laborde Oblique Mercator (xsd:string)
Scale factor at projection centre (geosrs:scaleFactorAtProjectionCentre) 0.9995 (xmls:double)
scope (geosrs:scope) Engineering survey, topographic mapping. (xmls:string)
Is member (rdfs:member) ofLabordeProjection Instances Collection (geoepsg:LabordeProjection_collection)
Is conversion (geosrs:conversion) ofTananarive (Paris) / Laborde Grid (geoepsg:29701)
Metadata
PropertyValue
inDataset (void:inDataset) geoepsg_dataset (geoepsg:geoepsg_dataset) [316102 geosrs:3DCoordinateSystem]