crd:Velocity2D 

2-D Velocity coordinate

Element Information

Model

crd:Name , crd:CValue2{0,1} , crd:CError2{0,2} , crd:CResolution2{0,2} , crd:CSize2{0,2} , crd:CPixSize2{0,2}
Children: crd:CError2, crd:CPixSize2, crd:CResolution2, crd:CSize2, crd:CValue2, crd:Name

Attributes

QName Type Fixed Default Use Inheritable Annotation
unit crd:posUnitType required
vel_time_unit crd:velTimeUnitType required

Source 

<xs:element name="Velocity2D" substitutionGroup="crd:Velocity">
  <xs:annotation>
    <xs:documentation>2-D Velocity coordinate</xs:documentation>
  </xs:annotation>
  <xs:complexType>
    <xs:complexContent>
      <xs:extension base="crd:vector2CoordinateType">
        <xs:attribute name="unit" type="crd:posUnitType" use="required"/>
        <xs:attribute name="vel_time_unit" type="crd:velTimeUnitType" use="required"/>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
</xs:element>

Sample