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Annotations
Attributes
Diagrams
Source
Used by
Complex Type gml:SurfaceType
Namespace http://www.opengis.net/gml
Annotations
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.
Diagram
Diagram index5.tmp#id49 index6.tmp#id31 index7.tmp#id44 index8.tmp#id46 index9.tmp#id30 index10.tmp#id29 index39.tmp#id111 index40.tmp#id58 index39.tmp#id110 index41.tmp#id174 index170.tmp#id173 index188.tmp#id664
Type extension of gml:AbstractSurfaceType
Type hierarchy
Used by
Model gml:metaDataProperty* , gml:description{0,1} , gml:name* , gml:patches
Children gml:description, gml:metaDataProperty, gml:name, gml:patches
Attributes
QName Type Fixed Default Use Annotation
axisLabels gml:NCNameList optional
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.
gid string optional
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This identifer is superceded by "gml:id" inherited from AbstractGMLType.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.
gml:id ID optional
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.
srsDimension positiveInteger optional
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.
srsName anyURI optional
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.
uomLabels gml:NCNameList optional
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.
Source
<complexType name="SurfaceType">
  <annotation>
    <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.</documentation>
  </annotation>
  <complexContent>
    <extension base="gml:AbstractSurfaceType">
      <sequence>
        <element ref="gml:patches">
          <annotation>
            <documentation>This element encapsulates the patches of the surface.</documentation>
          </annotation>
        </element>
      </sequence>
    </extension>
  </complexContent>
</complexType>
Schema location http://schemas.opengis.net/gml/3.1.1/base/geometryPrimitives.xsd