<simpleType name="ChannelDerivationEnumType">
  <annotation>
    <documentation>Specifies the source of data in a channel. From WITSML v. 2 namespace</documentation>
  </annotation>
  <restriction base="string">
    <enumeration value="raw">
      <annotation>
        <documentation>Raw measured data, directly from sensors.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="simulated">
      <annotation>
        <documentation>Simulated.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="spliced">
      <annotation>
        <documentation>Derived by splicing values from two or more other channels.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="sampled">
      <annotation>
        <documentation>Derived by sampling values from one or more other channels.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="model">
      <annotation>
        <documentation>Based on some modeled results of values in another one or more channels.</documentation>
      </annotation>
    </enumeration>
  </restriction>
</simpleType>