index - SurfaceType

complexType SurfaceType

http://www.opengis.net/gml

extension of gml:AbstractSurfaceType

base	gml:AbstractSurfaceType

gml:metaDataProperty gml:description gml:name gml:patches

element	Surface
complexTypes	PolyhedralSurfaceType TriangulatedSurfaceType

Database handle for the object. It is of XML type ID, so is constrained to be unique in the XML document within which it occurs. An external identifier for the object in the form of a URI may be constructed using standard XML and XPointer methods. This is done by concatenating the URI for the document, a fragment separator, and the value of the id attribute.

This attribute is included for backward compatibility with GML 2 and is deprecated with GML 3.
This identifer is superceded by "gml:id" inherited from AbstractGMLType. The attribute "gid" should not be used
anymore and may be deleted in future versions of GML without further notice.

In general this reference points to a CRS instance of gml:CoordinateReferenceSystemType
(see coordinateReferenceSystems.xsd). 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 must be specified as part of the larger context this
geometry element is part of, e.g. a geometric element like point, curve, etc. It is expected that this attribute will be specified
at the direct position level only in rare cases.

xs:positiveInteger

The "srsDimension" is the length of coordinate sequence (the number of entries in the list). This dimension is
specified by the coordinate reference system. When the srsName attribute is omitted, this attribute shall be omitted.

Ordered list of labels for all the axes of this CRS. The gml:axisAbbrev value should be used for these axis
labels, after spaces and forbiddden characters are removed. When the srsName attribute is included, this attribute is optional.
When the srsName attribute is omitted, this attribute shall also be omitted.

Ordered list of unit of measure (uom) labels for all the axes of this CRS. The value of the string in the
gml:catalogSymbol should be used for this uom labels, after spaces and forbiddden characters are removed. When the
axisLabels attribute is included, this attribute shall also be included. When the axisLabels attribute is omitted, this attribute
shall also be omitted.

A Surface is a 2-dimensional primitive and is composed of one or more surface patches. The surface patches are connected to one another.
The orientation of the surface is positive ("up"). The orientation of a surface chooses an "up" direction through the choice of the upward normal, which, if the surface is not a cycle, is the side of the surface from which the exterior boundary appears counterclockwise. Reversal of the surface orientation reverses the curve orientation of each boundary component, and interchanges the conceptual "up" and "down" direction of the surface. If the surface is the boundary of a solid, the "up" direction is usually outward. For closed surfaces, which have no boundary, the up direction is that of the surface patches, which must be consistent with one another. Its included surface patches describe the interior structure of the Surface.

<xs:complexType name="SurfaceType">
<xs:annotation>
    <xs:documentation>A Surface is a 2-dimensional primitive and is composed of one or more surface patches. The surface patches are connected to one another.
The orientation of the surface is positive ("up"). The orientation of a surface chooses an "up" direction through the choice of the upward normal, which, if the surface is not a cycle, is the side of the surface from which the exterior boundary appears counterclockwise. Reversal of the surface orientation reverses the curve orientation of each boundary component, and interchanges the conceptual "up" and "down" direction of the surface. If the surface is the boundary of a solid, the "up" direction is usually outward. For closed surfaces, which have no boundary, the up direction is that of the surface patches, which must be consistent with one another. Its included surface patches describe the interior structure of the Surface.</xs:documentation>
</xs:annotation>
<xs:complexContent>
    <xs:extension base="gml:AbstractSurfaceType">
      <xs:sequence>
        <xs:element ref="gml:patches">
          <xs:annotation>
            <xs:documentation>This element encapsulates the patches of the surface.</xs:documentation>
          </xs:annotation>
        </xs:element>
      </xs:sequence>
    </xs:extension>
</xs:complexContent>
</xs:complexType>

XML Schema documentation generated by XMLSpy Schema Editor http://www.altova.com/xmlspy