gml:imageDatum
gml:imageDatum is an association role to the image datum used by this CRS.
Element information
Namespace: http://www.opengis.net/gml/3.2
Schema document: external/ogc/gml/3.2.1/coordinateReferenceSystems.xsd
Type: gml:ImageDatumPropertyType
Properties: Global, Qualified
Content
- Choice [0..1]
- gml:ImageDatumgml:ImageDatum defines the origin of an image coordinate reference system, and is used in a local context only. For an image datum, the anchor definition is usually either the centre of the image or the corner of the image. For more information, see ISO 19111 B.3.5.
- gmx:ML_ImageDatum
from subst. group gml:ImageDatum
Attributes
| Name | Occ | Type | Description | Notes |
|---|---|---|---|---|
| xlink:type | [0..1] | xsd:string | Fixed value is "simple". from group xlink:simpleLink | |
| xlink:href | [0..1] | xsd:anyURI | from group xlink:simpleLink | |
| xlink:role | [0..1] | xsd:anyURI | from group xlink:simpleLink | |
| xlink:arcrole | [0..1] | xsd:anyURI | from group xlink:simpleLink | |
| xlink:title | [0..1] | xsd:string | from group xlink:simpleLink | |
| xlink:show | [0..1] | Anonymous | The 'show' attribute is used to communicate the desired presentation of the ending resource on traversal from the starting resource; it's value should be treated as follows: new - load ending resource in a new window, frame, pane, or other presentation context replace - load the resource in the same window, frame, pane, or other presentation context embed - load ending resource in place of the presentation of the starting resource other - behavior is unconstrained; examine other markup in the link for hints none - behavior is unconstrained | from group xlink:simpleLink |
| xlink:actuate | [0..1] | Anonymous | The 'actuate' attribute is used to communicate the desired timing of traversal from the starting resource to the ending resource; it's value should be treated as follows: onLoad - traverse to the ending resource immediately on loading the starting resource onRequest - traverse from the starting resource to the ending resource only on a post-loading event triggered for this purpose other - behavior is unconstrained; examine other markup in link for hints none - behavior is unconstrained | from group xlink:simpleLink |
| nilReason | [0..1] | gml:NilReasonType | from group gml:AssociationAttributeGroup | |
| gml:remoteSchema | [0..1] | xsd:anyURI | from group gml:AssociationAttributeGroup |
Substitution hierarchy
- gml:imageDatum
- can be substituted with gml:usesImageDatum
Sample instance
<gml:imageDatum> <gml:ImageDatum gml:id="ID"> <gml:metaDataProperty> <gml:GenericMetaData>Any text, intermingled with: <!--any element--> </gml:GenericMetaData> </gml:metaDataProperty> <gml:description>string</gml:description> <gml:descriptionReference/> <gml:identifier codeSpace="http://www.example.com/">string</gml:identifier> <gml:name>string</gml:name> <gml:remarks>string</gml:remarks> <gml:domainOfValidity> <gmd:EX_Extent>............ </gmd:EX_Extent> </gml:domainOfValidity> <gml:scope>string</gml:scope> <gml:anchorDefinition>string</gml:anchorDefinition> <gml:realizationEpoch>2000-01-01</gml:realizationEpoch> <gml:pixelInCell codeSpace="http://www.example.com/">string</gml:pixelInCell> </gml:ImageDatum> </gml:imageDatum>