gml:SRSReferenceGroup

The attribute group SRSReferenceGroup is an optional reference to the CRS used by this geometry, with optional additional information to simplify the processing of the coordinates when a more complete definition of the CRS is not needed.
In general the attribute srsName points to a CRS instance of gml:AbstractCoordinateReferenceSystem. For well-known references it is not required that the CRS description exists at the location the URI points to. 
If no srsName attribute is given, the CRS shall be specified as part of the larger context this geometry element is part of.

Attribute group information

Namespace: http://www.opengis.net/gml/3.2

Schema document: external/ogc/gml/3.2.1/geometryBasic0d1d.xsd

Attributes

Name	Occ	Type	Notes
srsName	[0..1]	xsd:anyURI
srsDimension	[0..1]	xsd:positiveInteger
axisLabels	[0..1]	gml:NCNameList	from group gml:SRSInformationGroup
uomLabels	[0..1]	gml:NCNameList	from group gml:SRSInformationGroup

Used in

Type gml:AbstractCurveType (Element gml:AbstractCurve)
Type gml:AbstractGeometricAggregateType (Element gml:AbstractGeometricAggregate)
Type gml:AbstractGeometricPrimitiveType (Element gml:AbstractGeometricPrimitive)
Type gml:AbstractSolidType (Element gml:AbstractSolid)
Type gml:AbstractSurfaceType (Element gml:AbstractSurface)
Type gml:CompositeCurveType (Element gml:CompositeCurve)
Type gml:CompositeSolidType (Element gml:CompositeSolid)
Type gml:CompositeSurfaceType (Element gml:CompositeSurface)
Type gml:CurveType (Element gml:Curve)
Type gml:DirectPositionListType (Element gml:posList)
Type gml:EnvelopeType (Element gml:Envelope)
Type gml:EnvelopeWithTimePeriodType (Element gml:EnvelopeWithTimePeriod)
Type gml:GeometricComplexType (Element gml:GeometricComplex)
Type gml:GridType (Element gml:Grid)
Type gml:LineStringType (Element gml:LineString)
Type gml:MultiCurveType (Element gml:MultiCurve)
Type gml:MultiGeometryType (Element gml:MultiGeometry)
Type gml:MultiPointType (Element gml:MultiPoint)
Type gml:MultiSolidType (Element gml:MultiSolid)
Type gml:MultiSurfaceType (Element gml:MultiSurface)
Type gml:OrientableCurveType (Element gml:OrientableCurve)
Type gml:OrientableSurfaceType (Element gml:OrientableSurface)
Type gml:PointType (Element gml:Point)
Type gml:PolygonType (Element gml:Polygon)
Type gml:RectifiedGridType (Element gml:RectifiedGrid)
Type gml:SolidType (Element gml:Solid)
Type gml:TinType (Element gml:Tin)
Type xls:EllipseType (Element xls:Ellipse)
Type gml:AbstractGeometryType (Elements gml:AbstractGeometry, gml:AbstractImplicitGeometry)
Type gml:SurfaceType (Elements gml:Surface, gml:PolyhedralSurface, gml:TriangulatedSurface)
Type gml:DirectPositionType (Elements gml:pos, gml:lowerCorner, gml:upperCorner, gml:location)
Type gml:VectorType (Elements gml:vector, gml:normal, gml:vectorAtStart, gml:vectorAtEnd, gml:refDirection, gml:offsetVector)