geo:Envelope
Envelope defines an extent using a pair of positions defining opposite corners in arbitrary dimensions. The first direct position is the "lower corner" (a coordinate position consisting of all the minimal ordinates for each dimension for all points within the envelope), the second one the "upper corner" (a coordinate position consisting of all the maximal ordinates for each dimension for all points within the envelope).
Element information
Namespace: http://niem.gov/niem/geospatial/2.1
Schema document: geospatial/2.1/geospatial.xsd
Type: geo:EnvelopeType
Properties: Global, Qualified, Nillable
Content
- Choice [0..*]
- gml:Envelope Envelope defines an extent using a pair of positions defining opposite corners in arbitrary dimensions. The first direct position is the "lower corner" (a coordinate position consisting of all the minimal ordinates for each dimension for all points within the envelope), the second one the "upper corner" (a coordinate position consisting of all the maximal ordinates for each dimension for all points within the envelope). The use of the properties "coordinates" and "pos" has been deprecated. The explicitly named properties "lowerCorner" and "upperCorner" shall be used instead.
- gml:EnvelopeWithTimePeriod gml:EnvelopeWithTimePeriod is provided for envelopes that include a temporal extent. It adds two time position properties, gml:beginPosition and gml:endPosition, which describe the extent of a time-envelope. Since gml:EnvelopeWithTimePeriod is assigned to the substitution group headed by gml:Envelope, it may be used whenever gml:Envelope is valid.
from subst. group gml:Envelope
Attributes
| Name | Occ | Type | Description | Notes |
|---|---|---|---|---|
| s:id | [0..1] | xsd:ID | from type s:ComplexObjectType | |
| s:metadata | [0..1] | xsd:IDREFS | from type s:ComplexObjectType | |
| s:linkMetadata | [0..1] | xsd:IDREFS | from type s:ComplexObjectType |
Sample instance
<geo:Envelope> <gml:Envelope> <gml:lowerCorner>1.0 1.0</gml:lowerCorner> <gml:upperCorner>1.0 1.0</gml:upperCorner> </gml:Envelope> </geo:Envelope>