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<xsd:documentation>An empty string is the default representation of a null value for a
curve (i.e. when the null value representation is not explicitly defined).
If a null value is defined in the logCurveInfo, it overrides any null value specified at the
logHeader level. An empty string is always a valid null value representation in the comma delimited list.
An empty string is not a valid null value representation within a space delimited array.
Specifying a null value also makes it easier to transform data back to a
legacy format without having to scan the data to insure that the null pattern
does not exist in the data. </xsd:documentation>
<xsd:documentation>True (true or 1) if this curve is a candidate to be a primary index.
False (false or 0) or not given, indicates otherwise.
An index curve should monotonically change when sorted on its own values (i.e., no duplicates). </xsd:documentation>
<xsd:documentation>A pointer to the wellDatum that represents the values of this trace.
This is only relevant for measured depths, vertical depths or elevations.</xsd:documentation>
<xsd:documentation>The minimum index value at which the first valid data point is located.
This value will be properly set by the server to reflect data in the returned document.</xsd:documentation>
<xsd:documentation>The maximum index value at which the last valid data point is located.
This value will be properly set by the server to reflect data in the returned document. </xsd:documentation>
<xsd:documentation>The minimum index value at which the first valid data point
is located. This value will be properly set by the server to reflect data
in the returned document. </xsd:documentation>
<xsd:documentation>The maximum index value at which the last valid data point
is located. This value will be properly set by the server to reflect data
in the returned document. </xsd:documentation>
<xsd:documentation>A 1-based index of data in the LOGDATA.DATA section.
A value of zero indicates an implied curve with no values in the data record.</xsd:documentation>
<xsd:documentation>Offset of sensor from drill bit.
This element is only informative. The measured depth values
are at the actual depth (not bit depth from which you must
subtract the offset).</xsd:documentation>
<xsd:documentation>Indicates that the curve is an array curve (i.e., multi-valued samples),
and provides meta data by which an axis of the array can be understood.</xsd:documentation>