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      <header alignment="Center" color="#a9a9a9">&amp;[DATE] &amp;[TIME] - &amp;[FILENAME]</header>
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  <region id="0" top="9" color="#000000" bgColor="#ffffff">
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      <title lang="eng">
        <p>     all spline stuff     </p>
      </title>
    </area>
    <region id="1" left="45" top="45" 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">i</e>
          <e type="operand">1</e>
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          <e type="operand">i</e>
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          <e type="operand">h</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>
          <e type="operator" args="2">≤</e>
          <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>
          <e type="operator" args="2">-</e>
          <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>
          <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">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">k</e>
          <e type="operand">1</e>
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          <e type="function" preserve="true" args="2">while</e>
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          <e type="operand">1</e>
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          <e type="function" preserve="true" args="2">el</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="operand">X</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">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="bracket">(</e>
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          <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">s</e>
          <e type="operand">k</e>
          <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>
          <e type="operand">t</e>
          <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>
          <e type="operand">X</e>
          <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>
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          <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>
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          <e type="operand">b</e>
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          <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>
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          <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="45" top="1593" 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="45" top="1674" 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="1863" color="#000000" bgColor="#ffffff">
      <area terminator="true" />
    </region>
  </region>
  <region id="8" left="27" top="1917" width="94" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <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="9" left="342" top="1926" width="175" height="50" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>Discrete as needed</p>
      </description>
      <input>
        <e type="operand">L</e>
        <e type="operand">0</e>
        <e type="operator" args="2">:</e>
        <e type="operand">H</e>
        <e type="operand">5</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="10" left="27" top="2007" 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="11" left="621" top="2007" 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="12" top="2061" color="#ff0000" bgColor="#ffffff">
    <area collapsed="true">
      <title lang="eng">
        <p>    l_p_cspline sanity Mathcad     </p>
      </title>
    </area>
    <region id="13" left="45" top="2097" 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="14" left="333" top="2097" 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="15" left="333" top="2142" 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="16" left="423" top="2142" 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="17" left="558" top="2160" width="111" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
      <math>
        <input>
          <e type="operand">M</e>
        </input>
        <result action="numeric">
          <e type="operand">1</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">0</e>
          <e type="operand">1</e>
          <e type="operand">4</e>
          <e type="operand">4</e>
          <e type="function" preserve="true" args="18">mat</e>
        </result>
      </math>
    </region>
    <region id="18" left="45" top="2178" 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="19" left="153" top="2187" 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="20" left="45" top="2277" 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="21" left="36" top="2412" 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="22" left="45" top="2538" 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="23" left="45" top="2565" 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="24" left="261" top="2565" 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="25" left="468" top="2565" 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="26" left="45" top="2628" 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="27" left="45" top="2682" 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>
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      <text lang="eng">
        <p bold="true">2. Construct the tridiagonal cubic spline matrix [cspline] </p>
      </text>
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          <e type="operand">1</e>
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          <e type="operand">1</e>
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          <e type="operand">cspline</e>
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          <e type="operator" args="2">:</e>
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      <area terminator="true" />
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        <e type="operator" args="2">^</e>
        <e type="operand">br</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">:</e>
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    <text lang="eng">
      <p bold="true">select your spline type</p>
    </text>
  </region>
  <region id="42" top="3033" color="#000000" bgColor="#ffffff">
    <area collapsed="true">
      <title lang="eng">
        <p>     Spool to file     </p>
      </title>
    </area>
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        <input>
          <e type="operand">CWD</e>
          <e type="operand" style="string">C:\SmathFile</e>
          <e type="function" preserve="true" args="1">CurrentDirectory</e>
          <e type="operator" args="2">:</e>
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      </math>
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      <math fractionType="auto">
        <description active="true" position="Top" lang="eng">
          <p>Spool to file the spline coefficcients</p>
        </description>
        <input>
          <e type="operand">s</e>
          <e type="operand">CWD</e>
          <e type="operand" style="string">spline</e>
          <e type="function" preserve="true" args="3">wfile</e>
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        <result action="numeric">
          <e type="operand">1</e>
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          <e type="operand">CWD</e>
          <e type="operand" style="string">spline</e>
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          <e type="operator" args="2">:</e>
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      <area terminator="true" />
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  </region>
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    <math>
      <input>
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        <e type="function" preserve="true" args="1">transpose</e>
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        <e type="operand">12</e>
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        <e type="operand">4</e>
        <e type="operator" args="1">-</e>
        <e type="operand">4</e>
        <e type="operand">12</e>
        <e type="operand">1</e>
        <e type="operand">4</e>
        <e type="function" preserve="true" args="6">mat</e>
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    </math>
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  <region id="48" left="27" top="3249" width="546" height="31" color="#000000" bgColor="#ff8040" fontSize="14">
    <text lang="eng">
      <p bold="true">Part 2. The complimentary cumulative integrate</p>
    </text>
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      <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>
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    </math>
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    <math>
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        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="51" left="27" top="3321" width="178" height="34" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
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        <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>
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        <e type="operator" args="2">:</e>
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    </math>
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    <math>
      <input>
        <e type="operand">Σ</e>
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      <result action="numeric">
        <e type="operand">5.166667</e>
        <e type="operand">3.5</e>
        <e type="operand">1.833333</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="5">mat</e>
      </result>
    </math>
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    <math>
      <input>
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        <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>
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  <region id="54" left="27" top="3402" 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="-66" transpose_y="-48" transpose_z="0">
      <description active="true" position="Top" lang="eng">
        <p>view the point-integrand</p>
      </description>
      <input>
        <e type="operand">pointΣ</e>
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      <description active="true" position="Top" lang="eng">
        <p>Export the cumulative integral</p>
      </description>
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        <e type="operand">1</e>
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        <e type="operand">Sum</e>
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        <e type="operand">0</e>
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        <e type="operand">Sum</e>
        <e type="operand">n</e>
        <e type="operand">1</e>
        <e type="operator" args="2">+</e>
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        <e type="operand">0</e>
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        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="operand">n</e>
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        <e type="operand">Sum</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">Sum</e>
        <e type="operand">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">Σ</e>
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        <e type="function" preserve="true" args="2">el</e>
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        <e type="function" preserve="true" args="1">eval</e>
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        <e type="function" preserve="true" args="3">for</e>
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        <e type="operand">5</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="7">line</e>
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    <math>
      <input>
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    <math>
      <input>
        <e type="operand">Σcumul</e>
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        <e type="operand">0</e>
        <e type="operand">2</e>
        <e type="operand">5.166667</e>
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        <e type="operand">8.666667</e>
        <e type="operand">4</e>
        <e type="operand">10.5</e>
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    <math>
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        <e type="operand" style="string">o</e>
        <e type="operand">5</e>
        <e type="operand" style="string">black</e>
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      <description active="true" position="Top" lang="eng">
        <p>l_p_c spline cumulative integrate</p>
      </description>
      <input>
        <e type="operand">Σ</e>
        <e type="operand">Σcumul</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
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    <math>
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">f</e>
        <e type="operand">X</e>
        <e type="operand">Y</e>
        <e type="operand">x</e>
        <e type="function" preserve="true" args="3">cinterp</e>
        <e type="operator" args="2">:</e>
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    </math>
  </region>
  <region id="61" left="306" top="3681" width="262" height="123" border="true" color="#000000" bgColor="#ebebeb" fontSize="10">
    <math>
      <input>
        <e type="operand">cumulative</e>
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        <e type="operand">1</e>
        <e type="operand">X</e>
        <e type="function" preserve="true" args="1">rows</e>
        <e type="function" preserve="true" args="2">range</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="function" args="1">f</e>
        <e type="operand">x</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">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" preserve="true" args="4">int</e>
        <e type="operator" args="2">:</e>
        <e type="function" preserve="true" args="3">for</e>
        <e type="operand">X</e>
        <e type="operand">y</e>
        <e type="function" preserve="true" args="2">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>
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    <math>
      <description active="true" position="Top" lang="eng">
        <p>Strictly equivalent   !</p>
      </description>
      <input>
        <e type="operand">cumulative</e>
      </input>
      <result action="numeric">
        <e type="operand">1</e>
        <e type="operand">0</e>
        <e type="operand">2</e>
        <e type="operand">4.9</e>
        <e type="operand">3</e>
        <e type="operand">8.4</e>
        <e type="operand">4</e>
        <e type="operand">10.5</e>
        <e type="operand">4</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="10">mat</e>
      </result>
    </math>
  </region>
  <region id="63" left="18" top="3906" width="476" height="31" color="#000000" bgColor="#ff8040" fontSize="14">
    <text lang="eng">
      <p bold="true">Part 3. The complimentary scalar dspline</p>
    </text>
  </region>
  <region id="64" left="18" top="3960" width="205" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">D</e>
        <e type="operand">s</e>
        <e type="operand">X</e>
        <e type="operand">Y</e>
        <e type="operand">x</e>
        <e type="function" args="4">dspline</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="65" left="279" top="3960" width="140" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">3</e>
        <e type="function" args="1">D</e>
      </input>
      <result action="numeric">
        <e type="operand">2.333333</e>
        <e type="operator" args="1">-</e>
      </result>
    </math>
  </region>
  <region id="66" left="279" top="3996" width="145" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">D2</e>
        <e type="operand">X</e>
        <e type="operand">s</e>
        <e type="function" preserve="true" args="2">augment</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="67" left="18" top="4005" width="208" height="78" border="true" color="#000000" bgColor="#e1ffff" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">plotD</e>
        <e type="operand">L</e>
        <e type="operand">x</e>
        <e type="operator" args="2">≤</e>
        <e type="bracket">(</e>
        <e type="operand">x</e>
        <e type="operand">H</e>
        <e type="operator" args="2">≤</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">&amp;</e>
        <e type="bracket">(</e>
        <e type="operand">x</e>
        <e type="function" args="1">D</e>
        <e type="operand" style="string">out spline</e>
        <e type="function" preserve="true" args="3">if</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="68" left="279" top="4023" width="104" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">D2</e>
      </input>
      <result action="numeric">
        <e type="operand">1</e>
        <e type="operand">12</e>
        <e type="operator" args="1">-</e>
        <e type="operand">2</e>
        <e type="operand">4</e>
        <e type="operator" args="1">-</e>
        <e type="operand">3</e>
        <e type="operand">4</e>
        <e type="operand">4</e>
        <e type="operand">12</e>
        <e type="operand">4</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="10">mat</e>
      </result>
    </math>
  </region>
  <region id="69" left="396" top="4050" width="327" height="28" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">D2</e>
        <e type="operand">D2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operand">D2</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operand">x</e>
        <e type="function" preserve="true" args="3">linterp</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
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    <plot type="2d" render="points" scale_x="0.346755847249602" scale_y="3.122172204366" scale_z="1.08263146798409" 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>The scalar dspline</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">plotD</e>
        <e type="operand">0</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </plot>
  </region>
  <region id="71" left="261" top="4113" width="262" height="158" border="true" color="#000000" bgColor="#ffe1e1" fontSize="10">
    <plot type="2d" render="points" scale_x="0.41754157682873" scale_y="3.33126505936653" scale_z="9.12997324351374" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="-85" transpose_y="0" transpose_z="0">
      <description active="true" position="Top" lang="eng">
        <p>2nd derivative directly from [X,s]</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">D2</e>
        <e type="operand">0</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </plot>
  </region>
  <region id="72" left="18" top="4347" width="453" height="31" color="#000000" bgColor="#ff8040" fontSize="14">
    <text lang="eng">
      <p bold="true">Part 4. The [lpc] spline interpolation</p>
    </text>
  </region>
  <region id="73" left="342" top="4392" width="277" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">Data</e>
        <e type="operand">data</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="74" left="18" top="4401" width="287" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="4">
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">Spline</e>
        <e type="operand">s</e>
        <e type="operand">X</e>
        <e type="operand">Y</e>
        <e type="operand">x</e>
        <e type="function" args="4">interpspline</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="75" left="18" top="4437" width="200" height="78" border="true" color="#000000" bgColor="#ffffe1" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">plot</e>
        <e type="operand">L</e>
        <e type="operand">x</e>
        <e type="operator" args="2">≤</e>
        <e type="bracket">(</e>
        <e type="operand">x</e>
        <e type="operand">H</e>
        <e type="operator" args="2">≤</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">&amp;</e>
        <e type="bracket">(</e>
        <e type="operand">x</e>
        <e type="function" args="1">Spline</e>
        <e type="operand" style="string">out spline</e>
        <e type="function" preserve="true" args="3">if</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="76" left="342" top="4437" width="219" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">Data</e>
      </input>
      <result action="numeric">
        <e type="operand">1</e>
        <e type="operand">4</e>
        <e type="operand" style="string">o</e>
        <e type="operand">5</e>
        <e type="operand" style="string">black</e>
        <e type="operand">2</e>
        <e type="operand">5</e>
        <e type="operand" style="string">o</e>
        <e type="operand">5</e>
        <e type="operand" style="string">black</e>
        <e type="operand">3</e>
        <e type="operand">2</e>
        <e type="operand" style="string">o</e>
        <e type="operand">5</e>
        <e type="operand" style="string">black</e>
        <e type="operand">4</e>
        <e type="operand">3</e>
        <e type="operand" style="string">o</e>
        <e type="operand">5</e>
        <e type="operand" style="string">black</e>
        <e type="operand">4</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="22">mat</e>
      </result>
    </math>
  </region>
  <region id="77" left="18" top="4527" width="292" height="158" border="true" color="#000000" bgColor="#ffffff" fontSize="10" showInputData="False">
    <plot type="2d" render="points" scale_x="1.04573760541441" scale_y="3.40004553055459" scale_z="3.55555547142212" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="-102" transpose_y="-37" transpose_z="0">
      <description active="true" position="Top" lang="eng">
        <p>"Proofing"  the cubic spline project</p>
      </description>
      <input>
        <e type="operand">1</e>
        <e type="operand">4</e>
        <e type="operand" style="string">o</e>
        <e type="operand">5</e>
        <e type="operand" style="string">black</e>
        <e type="operand">2</e>
        <e type="operand">5</e>
        <e type="operand" style="string">o</e>
        <e type="operand">5</e>
        <e type="operand" style="string">black</e>
        <e type="operand">3</e>
        <e type="operand">2</e>
        <e type="operand" style="string">o</e>
        <e type="operand">5</e>
        <e type="operand" style="string">black</e>
        <e type="operand">4</e>
        <e type="operand">3</e>
        <e type="operand" style="string">o</e>
        <e type="operand">5</e>
        <e type="operand" style="string">black</e>
        <e type="operand">4</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="22">mat</e>
        <e type="operand">x</e>
        <e type="function" args="1">plot</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </plot>
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    <math decimalPlaces="1">
      <input>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="1">time</e>
        <e type="operand">t0</e>
        <e type="operator" args="2">-</e>
      </input>
      <result action="numeric">
        <e type="operand">2.1</e>
        <e type="operand" style="unit">s</e>
        <e type="operator" args="2">*</e>
      </result>
    </math>
  </region>
  <region id="79" left="414" top="4581" width="341" height="120" color="#000000" bgColor="#ffe1e1" fontSize="10">
    <text lang="eng">
      <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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