<c:barChart
    xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart"
    xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main">
  <c:ser>
    <c:cat>
      <c:strRef>
        <c:f>Sheet1!$A$2:$A$4</c:f>
        <c:strCache>
          <c:ptCount val="3"/>
          <c:pt idx="0">
            <c:v>Foo</c:v>
          </c:pt>
          <c:pt idx="2">
            <c:v>Baz</c:v>
          </c:pt>
        </c:strCache>
      </c:strRef>
    </c:cat>
  </c:ser>
</c:barChart>

<c:barChart
    xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart"
    xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main">
  <c:ser>
    <c:cat>
      <c:multiLvlStrRef>
        <c:f>Sheet1!$A$2:$B$5</c:f>
        <c:multiLvlStrCache>
          <c:ptCount val="4"/>
          <c:lvl>
            <c:pt idx="0">
              <c:v>SF</c:v>
            </c:pt>
            <c:pt idx="1">
              <c:v>LA</c:v>
            </c:pt>
            <c:pt idx="2">
              <c:v>NY</c:v>
            </c:pt>
            <c:pt idx="3">
              <c:v>Albany</c:v>
            </c:pt>
          </c:lvl>
          <c:lvl>
            <c:pt idx="0">
              <c:v>CA</c:v>
            </c:pt>
            <c:pt idx="2">
              <c:v>NY</c:v>
            </c:pt>
          </c:lvl>
        </c:multiLvlStrCache>
      </c:multiLvlStrRef>
    </c:cat>
  </c:ser>
</c:barChart>

<c:barChart
    xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart"
    xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main">
  <c:ser>
    <c:cat>
      <c:multiLvlStrRef>
        <c:f>Sheet1!$A$2:$C$9</c:f>
        <c:multiLvlStrCache>
          <c:ptCount val="8"/>
          <c:lvl>
            <c:pt idx="0">
              <c:v>SF</c:v>
            </c:pt>
            <c:pt idx="1">
              <c:v>LA</c:v>
            </c:pt>
            <c:pt idx="2">
              <c:v>NY</c:v>
            </c:pt>
            <c:pt idx="3">
              <c:v>Albany</c:v>
            </c:pt>
            <c:pt idx="4">
              <c:v>Calgary</c:v>
            </c:pt>
            <c:pt idx="5">
              <c:v>Edmonton</c:v>
            </c:pt>
            <c:pt idx="6">
              <c:v>Toronto</c:v>
            </c:pt>
            <c:pt idx="7">
              <c:v>Ottawa</c:v>
            </c:pt>
          </c:lvl>
          <c:lvl>
            <c:pt idx="0">
              <c:v>CA</c:v>
            </c:pt>
            <c:pt idx="2">
              <c:v>NY</c:v>
            </c:pt>
            <c:pt idx="4">
              <c:v>AL</c:v>
            </c:pt>
            <c:pt idx="6">
              <c:v>ON</c:v>
            </c:pt>
          </c:lvl>
          <c:lvl>
            <c:pt idx="0">
              <c:v>USA</c:v>
            </c:pt>
            <c:pt idx="4">
              <c:v>CAN</c:v>
            </c:pt>
          </c:lvl>
        </c:multiLvlStrCache>
      </c:multiLvlStrRef>
    </c:cat>
  </c:ser>
</c:barChart>

<c:barChart
    xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart"
    xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main">
  <c:ser>
    <c:cat>
      <c:multiLvlStrRef>
        <c:f>Sheet1!$A$2:$C$9</c:f>
        <c:multiLvlStrCache>
          <c:ptCount val="8"/>
          <c:lvl>
            <c:pt idx="0">
              <c:v>SF</c:v>
            </c:pt>
            <c:pt idx="1">
              <c:v>LA</c:v>
            </c:pt>
            <c:pt idx="2">
              <c:v>NY</c:v>
            </c:pt>
          </c:lvl>
        </c:multiLvlStrCache>
      </c:multiLvlStrRef>
    </c:cat>
  </c:ser>
</c:barChart>
