reg:SkyIndex 

A shape defined through a sky indexing scheme; this is really a substitutino group for concrete implementations

Element Information

Model

Attributes

QName Type Fixed Default Use Inheritable Annotation
fill_factor restriction of xs:double 1.0 optional 
The fill_factor (value between 0 and 1) indicates the fraction of the region that is actually included; possible application: large scale resource coverage areas
note xs:string optional
unit crd:posUnitType deg optional

Source 

<xs:element name="SkyIndex" type="reg:skyIndexType" abstract="true" substitutionGroup="reg:Region">
  <xs:annotation>
    <xs:documentation>A shape defined through a sky indexing scheme; this is really a substitutino group for concrete implementations</xs:documentation>
  </xs:annotation>
</xs:element>

Sample