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      <header alignment="Center" color="#a9a9a9">&amp;[DATE] &amp;[TIME] - &amp;[FILENAME]</header>
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  <region id="0" top="36" color="#000000" bgColor="#ffffff">
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      <title lang="eng">
        <p>     all spline stuff     </p>
      </title>
    </area>
    <region id="1" left="36" top="72" width="523" height="126" border="true" color="#000000" bgColor="#ffffe1" fontSize="10">
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        <description active="true" position="Top" lang="eng">
          <p>Prepare the pseudo-integrand</p>
        </description>
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          <e type="operand">X</e>
          <e type="operand">Y</e>
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          <e type="operand">1</e>
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          <e type="operand">2</e>
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          <e type="operand">Y</e>
          <e type="operand">i</e>
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          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
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          <e type="operator" args="2">+</e>
          <e type="bracket">(</e>
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          <e type="operand">h</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="bracket">(</e>
          <e type="operand">3</e>
          <e type="operator" args="2">^</e>
          <e type="operand">24</e>
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          <e type="operand">s</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">s</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">+</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">:</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">line</e>
          <e type="function" preserve="true" args="3">for</e>
          <e type="operand">f</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">line</e>
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          <e type="operand">s</e>
          <e type="operand">X</e>
          <e type="operand">Y</e>
          <e type="operand">t</e>
          <e type="function" args="4">dspline</e>
          <e type="operand">t</e>
          <e type="operand">X</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
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          <e type="operand">k</e>
          <e type="operand">1</e>
          <e type="operator" args="2">:</e>
          <e type="operand">t</e>
          <e type="operand">X</e>
          <e type="operand">X</e>
          <e type="function" preserve="true" args="1">rows</e>
          <e type="operand">1</e>
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          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">≥</e>
          <e type="operand">k</e>
          <e type="operand">X</e>
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          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">:</e>
          <e type="operand">k</e>
          <e type="operand">1</e>
          <e type="operator" args="2">:</e>
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          <e type="operand">k</e>
          <e type="operand">1</e>
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          <e type="function" preserve="true" args="2">while</e>
          <e type="operand">2</e>
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          <e type="operand">Y</e>
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          <e type="function" preserve="true" args="2">el</e>
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          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
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          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">/</e>
          <e type="operand">s</e>
          <e type="operand">k</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">2</e>
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          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="bracket">(</e>
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          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
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          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operand">6</e>
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          <e type="operator" args="2">-</e>
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          <e type="operand">s</e>
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          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
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          <e type="function" preserve="true" args="2">el</e>
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          <e type="operand">X</e>
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          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
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          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">/</e>
          <e type="bracket">(</e>
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          <e type="operand">X</e>
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          <e type="function" preserve="true" args="2">el</e>
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          <e type="bracket">(</e>
          <e type="operand">2</e>
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          <e type="operand">2</e>
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          <e type="operand">s</e>
          <e type="operand">k</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">t</e>
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          <e type="operand">k</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
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          <e type="operator" args="2">+</e>
          <e type="operand">c</e>
          <e type="operator" args="2">+</e>
          <e type="operand">3</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="5">line</e>
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        <description active="true" position="Top" lang="eng">
          <p>The while loop form of the spline interpolation function</p>
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          <e type="operand">s</e>
          <e type="operand">X</e>
          <e type="operand">Y</e>
          <e type="operand">t</e>
          <e type="function" args="4">interpspline</e>
          <e type="operand" style="string">Find the knots that bracket 't' </e>
          <e type="operand">i0</e>
          <e type="operand">1</e>
          <e type="operator" args="2">:</e>
          <e type="operand">j</e>
          <e type="operand">X</e>
          <e type="function" preserve="true" args="1">rows</e>
          <e type="operator" args="2">:</e>
          <e type="operand">j</e>
          <e type="operand">i0</e>
          <e type="operator" args="2">-</e>
          <e type="operand">1</e>
          <e type="operator" args="2">&gt;</e>
          <e type="operand">i</e>
          <e type="operand">i0</e>
          <e type="operand">j</e>
          <e type="operator" args="2">+</e>
          <e type="operand">2</e>
          <e type="operator" args="2">/</e>
          <e type="function" preserve="true" args="1">Floor</e>
          <e type="operator" args="2">:</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">t</e>
          <e type="operator" args="2">&gt;</e>
          <e type="operand">j</e>
          <e type="operand">i</e>
          <e type="operator" args="2">:</e>
          <e type="operand">i0</e>
          <e type="operand">i</e>
          <e type="operator" args="2">:</e>
          <e type="function" preserve="true" args="3">if</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">line</e>
          <e type="function" preserve="true" args="2">while</e>
          <e type="operand" style="string">Evaluate the spline based on those knots</e>
          <e type="operand">h</e>
          <e type="operand">X</e>
          <e type="operand">j</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i0</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">:</e>
          <e type="operand">a</e>
          <e type="operand">X</e>
          <e type="operand">j</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">t</e>
          <e type="operator" args="2">-</e>
          <e type="operand">h</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
          <e type="operand">b</e>
          <e type="operand">t</e>
          <e type="operand">X</e>
          <e type="operand">i0</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operand">h</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
          <e type="operand">a</e>
          <e type="operand">Y</e>
          <e type="operand">i0</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operand">b</e>
          <e type="operand">Y</e>
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          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="operand">h</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operand">6</e>
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          <e type="operand">a</e>
          <e type="operand">a</e>
          <e type="operand">2</e>
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          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
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          <e type="operand">b</e>
          <e type="operand">b</e>
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          <e type="operand">s</e>
          <e type="operand">j</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="operand">9</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="11">line</e>
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      <math optimize="2" evaluate="false" decimalPlaces="4">
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          <p>The long cubic spline [lpc], scalar interpolation.</p>
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          <e type="operand">s</e>
          <e type="operand">X</e>
          <e type="operand">Y</e>
          <e type="operand">t</e>
          <e type="function" args="4">InterpSpline</e>
          <e type="operand">t</e>
          <e type="operand">X</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">≤</e>
          <e type="operand">idx</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">mat</e>
          <e type="operator" args="2">:</e>
          <e type="operand">t</e>
          <e type="operand">X</e>
          <e type="operand">N</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">≥</e>
          <e type="operand">idx</e>
          <e type="operand">N</e>
          <e type="operand">N</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">mat</e>
          <e type="operator" args="2">:</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">:</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">t</e>
          <e type="operator" args="2">&lt;</e>
          <e type="operand">i</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operator" args="2">:</e>
          <e type="function" preserve="true" args="2">while</e>
          <e type="operand">idx</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operand">i</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">mat</e>
          <e type="operator" args="2">:</e>
          <e type="operand">3</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="5">line</e>
          <e type="function" preserve="true" args="3">if</e>
          <e type="function" preserve="true" args="3">if</e>
          <e type="operand">hx</e>
          <e type="operand">X</e>
          <e type="operand">idx</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">idx</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">:</e>
          <e type="operand">hy</e>
          <e type="operand">Y</e>
          <e type="operand">idx</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">Y</e>
          <e type="operand">idx</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">:</e>
          <e type="operand">hs</e>
          <e type="operand">s</e>
          <e type="operand">idx</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">s</e>
          <e type="operand">idx</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">:</e>
          <e type="operand">3</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="5">line</e>
          <e type="operand">a</e>
          <e type="operand">hs</e>
          <e type="operand">6</e>
          <e type="operand">hx</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
          <e type="operand">b</e>
          <e type="operand">s</e>
          <e type="operand">idx</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">2</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
          <e type="operand">c</e>
          <e type="operand">hy</e>
          <e type="operand">hx</e>
          <e type="operator" args="2">/</e>
          <e type="operand">hx</e>
          <e type="operand">6</e>
          <e type="operator" args="2">/</e>
          <e type="operand">s</e>
          <e type="operand">idx</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">2</e>
          <e type="operand">s</e>
          <e type="operand">idx</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">:</e>
          <e type="operand">d</e>
          <e type="operand">Y</e>
          <e type="operand">idx</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">:</e>
          <e type="operand">4</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="6">line</e>
          <e type="operand">a</e>
          <e type="operand">t</e>
          <e type="operand">X</e>
          <e type="operand">idx</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">3</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">*</e>
          <e type="operand">b</e>
          <e type="operand">t</e>
          <e type="operand">X</e>
          <e type="operand">idx</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="operand">c</e>
          <e type="operand">t</e>
          <e type="operand">X</e>
          <e type="operand">idx</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="operand">d</e>
          <e type="operator" args="2">+</e>
          <e type="operand">4</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="6">line</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="5" left="36" top="1620" width="523" height="76" border="true" color="#000000" bgColor="#ebebeb" fontSize="10">
      <math optimize="2" fractionType="auto" decimalPlaces="3">
        <input>
          <e type="operand">data</e>
          <e type="operand">char</e>
          <e type="operand">size</e>
          <e type="operand">clr</e>
          <e type="function" args="4">plot</e>
          <e type="operand">k</e>
          <e type="operand">1</e>
          <e type="operand">data</e>
          <e type="function" preserve="true" args="1">rows</e>
          <e type="function" preserve="true" args="2">range</e>
          <e type="operand">r3</e>
          <e type="operand">k</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">char</e>
          <e type="operator" args="2">:</e>
          <e type="operand">r4</e>
          <e type="operand">k</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">size</e>
          <e type="operator" args="2">:</e>
          <e type="operand">r5</e>
          <e type="operand">k</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">clr</e>
          <e type="operator" args="2">:</e>
          <e type="operand">1</e>
          <e type="operand">3</e>
          <e type="function" preserve="true" args="5">mat</e>
          <e type="function" preserve="true" args="3">for</e>
          <e type="operand">data</e>
          <e type="operand">r3</e>
          <e type="operand">r4</e>
          <e type="operand">r5</e>
          <e type="function" preserve="true" args="4">augment</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">line</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="6" left="36" top="1701" width="270" height="140" border="true" color="#000000" bgColor="#ebebeb" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <input>
          <e type="operand">L</e>
          <e type="operand">H</e>
          <e type="operand">N</e>
          <e type="function" args="3">xd</e>
          <e type="operand" style="string">range discretise</e>
          <e type="operand">U</e>
          <e type="operand">0</e>
          <e type="operator" args="2">:</e>
          <e type="operand">dx</e>
          <e type="operand">H</e>
          <e type="operand">L</e>
          <e type="operator" args="2">-</e>
          <e type="operand">N</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operand">N</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">range</e>
          <e type="operand">U</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">L</e>
          <e type="operand">dx</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">dx</e>
          <e type="operand">i</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="operator" args="2">:</e>
          <e type="function" preserve="true" args="3">for</e>
          <e type="operand">U</e>
          <e type="operand">5</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="7">line</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="7" top="1890" color="#000000" bgColor="#ffffff">
      <area terminator="true" />
    </region>
  </region>
  <region id="8" top="1917" color="#000000" bgColor="#ffffff">
    <area collapsed="true">
      <title lang="eng">
        <p>     data     </p>
      </title>
    </area>
    <region id="9" left="63" top="1944" width="178" height="387" color="#000000" bgColor="#ffffff" fontSize="10">
      <math>
        <input>
          <e type="operand">data</e>
          <e type="operand">0</e>
          <e type="operand">3</e>
          <e type="operator" args="1">-</e>
          <e type="operand">0.2</e>
          <e type="operand">2.951056</e>
          <e type="operator" args="1">-</e>
          <e type="operand">0.4</e>
          <e type="operand">2.589484</e>
          <e type="operator" args="1">-</e>
          <e type="operand">0.6</e>
          <e type="operand">1.581057</e>
          <e type="operator" args="1">-</e>
          <e type="operand">0.8</e>
          <e type="operand">0.05423</e>
          <e type="operand">1</e>
          <e type="operand">1.5</e>
          <e type="operand">1.2</e>
          <e type="operand">2.112192</e>
          <e type="operand">1.4</e>
          <e type="operand">2.110927</e>
          <e type="operand">1.6</e>
          <e type="operand">1.8785</e>
          <e type="operand">1.8</e>
          <e type="operand">1.607987</e>
          <e type="operand">2</e>
          <e type="operand">1.363636</e>
          <e type="operand">2.2</e>
          <e type="operand">1.15897</e>
          <e type="operand">2.4</e>
          <e type="operand">0.991538</e>
          <e type="operand">2.6</e>
          <e type="operand">0.855127</e>
          <e type="operand">2.8</e>
          <e type="operand">0.743554</e>
          <e type="operand">3</e>
          <e type="operand">0.651639</e>
          <e type="operand">3.2</e>
          <e type="operand">0.575282</e>
          <e type="operand">3.4</e>
          <e type="operand">0.511303</e>
          <e type="operand">3.6</e>
          <e type="operand">0.457245</e>
          <e type="operand">3.8</e>
          <e type="operand">0.411207</e>
          <e type="operand">4</e>
          <e type="operand">0.371707</e>
          <e type="operand">21</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="44">mat</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="10" top="2340" color="#000000" bgColor="#ffffff">
      <area terminator="true" />
    </region>
  </region>
  <region id="11" left="18" top="2367" width="94" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
    <math evaluate="false">
      <input>
        <e type="operand">data</e>
        <e type="operand">1</e>
        <e type="operand">4</e>
        <e type="operand">2</e>
        <e type="operand">5</e>
        <e type="operand">3</e>
        <e type="operand">2</e>
        <e type="operand">4</e>
        <e type="operand">3</e>
        <e type="operand">4</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="10">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="12" left="18" top="2457" width="464" height="31" color="#000000" bgColor="#ff8040" fontSize="14">
    <text lang="eng">
      <p bold="true">Part 1. get the 's' spline coefficients</p>
    </text>
  </region>
  <region id="13" left="612" top="2457" width="96" height="26" color="#ffff00" bgColor="#010101" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">t0</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="1">time</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="14" top="2511" color="#ff0000" bgColor="#ffffff">
    <area collapsed="true">
      <title lang="eng">
        <p>    l_p_cspline sanity Mathcad     </p>
      </title>
    </area>
    <region id="15" left="36" top="2547" width="140" height="69" color="#000000" bgColor="#ffffff" fontSize="10">
      <math>
        <input>
          <e type="operand">X</e>
          <e type="operand">data</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">col</e>
          <e type="operator" args="2">:</e>
          <e type="operand">Y</e>
          <e type="operand">data</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">col</e>
          <e type="operator" args="2">:</e>
          <e type="operand">n</e>
          <e type="operand">data</e>
          <e type="function" preserve="true" args="1">rows</e>
          <e type="operator" args="2">:</e>
          <e type="operand">3</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="5">line</e>
        </input>
      </math>
    </region>
    <region id="16" left="324" top="2547" width="176" height="40" border="true" color="#000000" bgColor="#ffffe1" fontSize="10">
      <text lang="eng">
        <p>Initialise the blankdiagonal matrix</p>
      </text>
    </region>
    <region id="17" left="324" top="2592" width="71" height="32" color="#000000" bgColor="#ffffff" fontSize="10">
      <math>
        <input>
          <e type="operand">M</e>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">1</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="18" left="414" top="2592" width="71" height="32" color="#000000" bgColor="#ffffff" fontSize="10">
      <math>
        <input>
          <e type="operand">M</e>
          <e type="operand">n</e>
          <e type="operand">n</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">1</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="19" left="36" top="2628" width="85" height="45" color="#000000" bgColor="#ebebeb" fontSize="10">
      <math>
        <input>
          <e type="operand">N</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">:</e>
          <e type="operand">r</e>
          <e type="operand">2</e>
          <e type="operand">N</e>
          <e type="function" preserve="true" args="2">range</e>
          <e type="operator" args="2">:</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">line</e>
        </input>
      </math>
    </region>
    <region id="20" left="144" top="2637" width="301" height="31" color="#000000" bgColor="#ebebeb" fontSize="14">
      <text lang="eng">
        <p bold="true">Prepare the cubic splines</p>
      </text>
    </region>
    <region id="21" left="36" top="2727" width="322" height="106" border="true" color="#000000" bgColor="#ebebeb" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <description active="true" position="Top" lang="eng">
          <p>Install the constant vector 'br'</p>
        </description>
        <input>
          <e type="operand">i</e>
          <e type="operand">r</e>
          <e type="operand">br</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">/</e>
          <e type="bracket">(</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">/</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="1">eval</e>
          <e type="operator" args="2">:</e>
          <e type="operand">br</e>
          <e type="operand">N</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">0</e>
          <e type="operator" args="2">:</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">line</e>
          <e type="function" preserve="true" args="3">for</e>
        </input>
      </math>
    </region>
    <region id="22" left="27" top="2862" width="671" height="31" color="#000000" bgColor="#80ffff" fontSize="14">
      <text lang="eng">
        <p bold="true">Fill-in the respective l_p_c splines tridiagonal matrices</p>
      </text>
    </region>
    <region id="23" left="54" top="2898" width="464" height="68" color="#000000" bgColor="#ffffff" fontSize="10">
      <math>
        <input>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">-</e>
          <e type="operand">2</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">-</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">-</e>
          <e type="operand">2</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">3</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">/</e>
        </input>
      </math>
    </region>
    <region id="24" left="558" top="2916" width="205" height="59" color="#000000" bgColor="#ffffff" fontSize="10">
      <math>
        <input>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">/</e>
          <e type="bracket">(</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">Y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">/</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">-</e>
        </input>
      </math>
    </region>
    <region id="25" left="36" top="2988" width="499" height="24" color="#000000" bgColor="#fff5eb" fontSize="10">
      <text lang="eng">
        <p bold="true">0. Construct the tridiagonal linear spline matrix [lspline] </p>
      </text>
    </region>
    <region id="26" left="36" top="3015" width="182" height="65" border="true" color="#000000" bgColor="#fff5eb" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <input>
          <e type="operand">i</e>
          <e type="operand">r</e>
          <e type="operand">M</e>
          <e type="operand">i</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operand">6</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
          <e type="function" preserve="true" args="3">for</e>
        </input>
      </math>
    </region>
    <region id="27" left="252" top="3015" width="182" height="65" border="true" color="#000000" bgColor="#fff5eb" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <input>
          <e type="operand">i</e>
          <e type="operand">r</e>
          <e type="operand">M</e>
          <e type="operand">i</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operand">3</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
          <e type="function" preserve="true" args="3">for</e>
        </input>
      </math>
    </region>
    <region id="28" left="459" top="3015" width="182" height="65" border="true" color="#000000" bgColor="#fff5eb" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <input>
          <e type="operand">i</e>
          <e type="operand">r</e>
          <e type="operand">M</e>
          <e type="operand">i</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operand">6</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
          <e type="function" preserve="true" args="3">for</e>
        </input>
      </math>
    </region>
    <region id="29" left="36" top="3078" width="93" height="24" color="#000000" bgColor="#ff8080" fontSize="10">
      <math>
        <input>
          <e type="operand">lspline</e>
          <e type="operand">M</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="30" left="36" top="3132" width="524" height="24" color="#000000" bgColor="#ebebeb" fontSize="10">
      <text lang="eng">
        <p bold="true">1. Construct the tridiagonal parabolic spline matrix [pspline] </p>
      </text>
    </region>
    <region id="31" left="36" top="3159" width="80" height="32" color="#000000" bgColor="#ebebeb" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <input>
          <e type="operand">M</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">1</e>
          <e type="operator" args="1">-</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="32" left="153" top="3159" width="101" height="32" color="#000000" bgColor="#ebebeb" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <input>
          <e type="operand">M</e>
          <e type="operand">N</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operand">N</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">1</e>
          <e type="operator" args="1">-</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="33" left="36" top="3204" width="93" height="24" color="#000000" bgColor="#ff8080" fontSize="10">
      <math>
        <input>
          <e type="operand">pspline</e>
          <e type="operand">M</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="34" left="36" top="3240" width="491" height="24" color="#000000" bgColor="#fff5ff" fontSize="10">
      <text lang="eng">
        <p bold="true">2. Construct the tridiagonal cubic spline matrix [cspline] </p>
      </text>
    </region>
    <region id="35" left="36" top="3276" width="140" height="61" color="#000000" bgColor="#fff5ff" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <input>
          <e type="operand">M</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">X</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">3</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">X</e>
          <e type="operand">3</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">/</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="36" left="198" top="3276" width="187" height="59" color="#000000" bgColor="#fff5ff" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <input>
          <e type="operand">M</e>
          <e type="operand">N</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operand">N</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">X</e>
          <e type="operand">N</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">N</e>
          <e type="operand">2</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">X</e>
          <e type="operand">N</e>
          <e type="operand">2</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">N</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="37" left="405" top="3276" width="132" height="61" color="#000000" bgColor="#fff5ff" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <input>
          <e type="operand">M</e>
          <e type="operand">1</e>
          <e type="operand">3</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">X</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">X</e>
          <e type="operand">3</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="38" left="558" top="3276" width="195" height="61" color="#000000" bgColor="#fff5ff" fontSize="10">
      <math optimize="2" decimalPlaces="4">
        <input>
          <e type="operand">M</e>
          <e type="operand">N</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operand">N</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="3">el</e>
          <e type="operand">X</e>
          <e type="operand">N</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">N</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">X</e>
          <e type="operand">N</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">X</e>
          <e type="operand">N</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="39" left="36" top="3357" width="93" height="24" color="#000000" bgColor="#ff8080" fontSize="10">
      <math>
        <input>
          <e type="operand">cspline</e>
          <e type="operand">M</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="40" top="3384" color="#000000" bgColor="#ffffff">
      <area terminator="true" />
    </region>
  </region>
  <region id="41" left="576" top="3420" width="203" height="58" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Top" lang="eng">
        <p>Discrete as needed</p>
      </description>
      <input>
        <e type="operand">L</e>
        <e type="operand">X</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">H</e>
        <e type="operand">X</e>
        <e type="operand">n</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Num</e>
        <e type="operand">100</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">3</e>
        <e type="function" preserve="true" args="5">mat</e>
        <e type="operand">U</e>
        <e type="operand">L</e>
        <e type="operand">H</e>
        <e type="operand">Num</e>
        <e type="function" args="3">xd</e>
        <e type="operator" args="2">:</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
    </math>
  </region>
  <region id="42" left="63" top="3429" width="43" height="32" color="#000000" bgColor="#ffffff">
    <picture>
      <raw format="png" encoding="base64">iVBORw0KGgoAAAANSUhEUgAAACMAAAAYCAYAAABwZEQ3AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACpSURBVEhLzdRNCoMwEEBhKZ5EPFnxWNKTSU8iTdvFgyojJvPjdPE2mQQ+EkjXv9ZS3a2X151qx3ya7pM8N6bC/KKW5yLvVWTCkBfKBUNWlCuGtKgQDLWiQjFUi+qkw1GdoS7F0BEqBUN7VCqGQP0FZhzGMj/mXAyI1GfaI1IwRwi65NM7Q1AophZBIZhWBLlitAhywVgRZMJ4IUiF+SLEubEmjPdNbFvLG1DzBUqJJvVOAAAAAElFTkSuQmCC</raw>
    </picture>
  </region>
  <region id="43" left="117" top="3429" width="137" height="33" color="#000000" bgColor="#ffff80" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">s</e>
        <e type="operand">lspline</e>
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operator" args="2">^</e>
        <e type="operand">br</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="44" left="270" top="3429" width="43" height="32" color="#000000" bgColor="#ffffff">
    <picture>
      <raw format="png" encoding="base64">iVBORw0KGgoAAAANSUhEUgAAACMAAAAYCAYAAABwZEQ3AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADFSURBVEhLzdNbCoMwEIXhUFxJcWXFZUlXJq5EmlLKCYrnkGTSdHz4X4wzfHgJw2uL3boN/LqoC2Z6TF+IF2ZZlyPCAyMRiMyozJgsApFZVTWmGIHIDlUxphqByC5VFmNGILJTJTHNCEMnjAcCJYwnAoUrIFCYn3Mc7yM9/HfpNV0BdfqAPVHy1/ZASQxqRpGdqiwGmVFkl6oYg6pRZIeqGoOKUWRWZcagLIrMqJoxSKLIvaqfYfYdUORc1QXzKT0pcsbb4hvMKQVKjmB8dgAAAABJRU5ErkJggg==</raw>
    </picture>
  </region>
  <region id="45" left="333" top="3429" width="222" height="31" color="#000000" bgColor="#80ffff" fontSize="14">
    <text lang="eng">
      <p bold="true">select spline type</p>
    </text>
  </region>
  <region id="46" left="117" top="3474" width="43" height="24" color="#000000" bgColor="#ff8080" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>assign/isolate</p>
      </description>
      <input>
        <e type="operand">s</e>
        <e type="operand">s</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="47" left="117" top="3510" width="489" height="35" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">s</e>
        <e type="function" preserve="true" args="1">transpose</e>
      </input>
      <result action="numeric">
        <e type="operand">0</e>
        <e type="operand">7.41249</e>
        <e type="operand">17.24424</e>
        <e type="operand">20.638799</e>
        <e type="operand">5.770435</e>
        <e type="operator" args="1">-</e>
        <e type="operand">25.984607</e>
        <e type="operator" args="1">-</e>
        <e type="operand">1</e>
        <e type="operand">6</e>
        <e type="function" preserve="true" args="8">mat</e>
      </result>
    </math>
  </region>
  <region id="48" left="18" top="3564" width="546" height="31" color="#000000" bgColor="#ff8040" fontSize="14">
    <text lang="eng">
      <p bold="true">Part 2. The complimentary cumulative integrate</p>
    </text>
  </region>
  <region id="49" left="18" top="3609" width="185" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="4">
      <input>
        <e type="operand">Σ</e>
        <e type="operand">s</e>
        <e type="operand">X</e>
        <e type="operand">Y</e>
        <e type="function" args="3">fintegrate</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="50" left="288" top="3609" width="43" height="24" color="#000000" bgColor="#ffff80" fontSize="10">
    <math>
      <input>
        <e type="operand">Σ</e>
        <e type="operand">Σ</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="51" left="18" top="3636" width="178" height="34" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">v</e>
        <e type="operand">X</e>
        <e type="operand">1</e>
        <e type="operand">Σ</e>
        <e type="function" preserve="true" args="1">rows</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">1</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="52" left="18" top="3681" width="362" height="28" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">pointΣ</e>
        <e type="operand">v</e>
        <e type="operand">Σ</e>
        <e type="function" preserve="true" args="2">augment</e>
        <e type="operand" style="string">o</e>
        <e type="operand">5</e>
        <e type="operand" style="string">black</e>
        <e type="function" args="4">plot</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="53" left="18" top="3717" width="240" height="158" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot type="2d" render="points" scale_x="2.00634408223202" scale_y="3.07390715926358" scale_z="176.95450261709" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="-78" transpose_y="1" transpose_z="0">
      <description active="true" position="Top" lang="eng">
        <p>view the point-integrand</p>
      </description>
      <input>
        <e type="operand">pointΣ</e>
      </input>
    </plot>
  </region>
  <region id="54" left="270" top="3717" width="297" height="145" border="true" color="#000000" bgColor="#ffffe1" fontSize="10">
    <math optimize="2" decimalPlaces="4">
      <description active="true" position="Top" lang="eng">
        <p>Export the cumulative integral</p>
      </description>
      <input>
        <e type="operand">Σcumul</e>
        <e type="operand">n</e>
        <e type="operand">X</e>
        <e type="function" preserve="true" args="1">rows</e>
        <e type="operand">1</e>
        <e type="operator" args="2">-</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Sum</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">0</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Sum</e>
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      <p bold="true">Part 3. The complimentary scalar dspline</p>
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      <p bold="true">Part 4. The [lpc] spline interpolation</p>
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        <p>"Proofing"  the cubic spline project</p>
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      <p>Sources and credits:1. Mathsoft for the tridiagonal systems.2. Robert Adair for the algos:...InterpSpline(s,X,Y,t) ...dspline(s,X,Y,t)...fintegrate(s,vx,vy)3. Smath adapted: Jean Giraud</p>
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