xUnits 

<h:div class="summary">Units for x axis.</h:div>
<h:div class="description">All x-axis data must have unambiguous units. Ideally the data and _xMin_ or _xValue_ should share the same units but different xUnits can be used as long as it is clear..</h:div>

Attribute Information

Used By

Attribute Group xUnits

Source 

<xsd:attribute id="att.xUnits" name="xUnits" type="unitsType">
  <xsd:annotation>
    <xsd:documentation>
      <h:div class="summary">Units for x axis.</h:div>
      <h:div class="description">All x-axis data must have unambiguous units. Ideally the data and _xMin_ or _xValue_ should share the same units but different xUnits can be used as long as it is clear..</h:div>
    </xsd:documentation>
  </xsd:annotation>
</xsd:attribute>

Sample