示例：平滑时间序列

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  <plot>
    <xyPlot>
      <title class="- topic/title " wwtype:type="Paragraph" xmlns:wwtype="urn:WebWorks-Type-Schema" />
      <legend />
      <traces>
        <trace resultRef="37">
          <traceStyle color="#FF00008B" symbol="rhombus" line-weight="1" line-style="None">lines</traceStyle>
        </trace>
        <trace resultRef="38">
          <traceStyle color="#FF0000FF" symbol="none" line-weight="2" line-style="Solid">lines</traceStyle>
        </trace>
        <trace resultRef="39">
          <traceStyle color="#FF008000" symbol="none" line-weight="2" line-style="Solid">lines</traceStyle>
        </trace>
        <trace resultRef="40">
          <traceStyle color="#FFFF0000" symbol="none" line-weight="2" line-style="Solid">lines</traceStyle>
        </trace>
      </traces>
      <graph-size width="501.8" height="235.2" />
      <axes>
        <xAxis rank="1" legend-position="PlotBoundaryBottom" start="0" end="200">
          <axisLine position="ticknumberlock" positionticmark="5" legendWidth="60.93" />
          <axisGrid>
            <gridFrequency>11</gridFrequency>
            <gridLabels display="true" />
            <gridLines />
            <tickMarks display="true" />
          </axisGrid>
          <axisLabel />
          <markers />
          <numberFormat>
            <decimal precision="3" show-trailing-zeros="false" radix="dec" imaginary-value="i" />
          </numberFormat>
          <plotEquations>
            <plotEquation>
              <math resultRef="41">
                <id xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">x</id>
              </math>
              <math resultRef="42">
                <placeholder xmlns="http://schemas.mathsoft.com/math50" />
              </math>
            </plotEquation>
          </plotEquations>
          <xyDomain scale-type="linear" auto-scale="true">
            <startValue>
              <placeholder xmlns="http://schemas.mathsoft.com/math50" />
            </startValue>
            <endValue>
              <placeholder xmlns="http://schemas.mathsoft.com/math50" />
            </endValue>
          </xyDomain>
        </xAxis>
        <yAxis rank="1" legend-position="PlotBoundaryLeft" start="9.175" end="9.355">
          <axisLine position="ticknumberlock" positionticmark="0" legendWidth="83.1233333333333" />
          <axisGrid>
            <gridFrequency>13</gridFrequency>
            <gridLabels display="true" />
            <gridLines />
            <tickMarks display="true" />
          </axisGrid>
          <axisLabel />
          <markers />
          <numberFormat>
            <decimal precision="3" show-trailing-zeros="false" radix="dec" imaginary-value="i" />
          </numberFormat>
          <plotEquations>
            <plotEquation>
              <math resultRef="43">
                <id xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">data</id>
              </math>
              <math resultRef="44">
                <placeholder xmlns="http://schemas.mathsoft.com/math50" />
              </math>
            </plotEquation>
            <plotEquation>
              <math resultRef="45">
                <id xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">Yss</id>
              </math>
              <math resultRef="46">
                <placeholder xmlns="http://schemas.mathsoft.com/math50" />
              </math>
            </plotEquation>
            <plotEquation>
              <math resultRef="47">
                <id xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">Yks</id>
              </math>
              <math resultRef="48">
                <placeholder xmlns="http://schemas.mathsoft.com/math50" />
              </math>
            </plotEquation>
            <plotEquation>
              <math resultRef="49">
                <id xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">Yvs</id>
              </math>
              <math resultRef="50">
                <placeholder xmlns="http://schemas.mathsoft.com/math50" />
              </math>
            </plotEquation>
          </plotEquations>
          <xyDomain scale-type="linear" auto-scale="true">
            <startValue>
              <placeholder xmlns="http://schemas.mathsoft.com/math50" />
            </startValue>
            <endValue>
              <placeholder xmlns="http://schemas.mathsoft.com/math50" />
            </endValue>
          </xyDomain>
        </yAxis>
      </axes>
    </xyPlot>
  </plot>
</region>