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      <title>CORD1R</title>
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      <div class="title_refTopic" id="xps10_pagetitle">CORD1R </div>
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      <h4 class="refClassification">Rectangular Coordinate System Definition, Form 1 </h4>
      <p class="para_refTopic">Defines a rectangular coordinate system using three grid points. </p>
      <div class="title_refCategory">Format: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="10*">
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                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">1 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">2 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">3 </p>
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                     <p class="para_th">4 </p>
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                     <p class="para_th">5 </p>
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                     <p class="para_th">6 </p>
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                     <p class="para_th">7 </p>
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                     <p class="para_th">8 </p>
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                     <p class="para_th">9 </p>
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                     <p class="para_th">10 </p>
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            <tbody>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">CORD1R </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CIDA </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G1A </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G2A </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G3A </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CIDB </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G1B </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G2B </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G3B </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
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            </tbody>
         </table><br></div>
      <div class="title_refCategory">Example: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
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            <tbody>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">CORD1R </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">3 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">16 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">32 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">19 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Fields:</div>
      <div class="refCategoryContent">
         <table cellpadding="9" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="16*">
               <col span="1" width="84*">
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                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Field </b></p>
                  </th>
                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Contents </b></p>
                  </th>
               </tr>
            </thead>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">CIDA, CIDB </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Coordinate system identification number.  (Integer &gt; 0) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">GiA, GiB </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Grid point identification numbers.  (Integer &gt; 0; G1A &ne; G2A &ne; G3A and G1B &ne; G2B &ne; G3B) </p>
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            </tbody>
         </table><br><a name="ref16198"></a><div class="figure">
            <p align="center"><img align="bottom" src="graphics/bulkc2-fig03.gif"></p>
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         <div class="title_figure">Figure. CORD1R Definition </div>
      </div>
      <div class="title_refCategory">Remarks: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">Coordinate system identification numbers on all CORD1R, CORD1C, CORD1S, CORD2R, CORD2C, CORD2S and CORD3G entries must be unique. </p>
            </li>
            <li>
               <p class="para_item">One or two coordinate systems may be defined on a single entry. </p>
            </li>
            <li>
               <p class="para_item">GiA and GiB must be defined in coordinate systems with definitions that do not involve the coordinate system being defined.  The first point is the origin, the second lies on the z-axis, and the third lies in the x-z plane.  The three grid points GiA (or GiB) must be noncolinear and not coincident. </p>
            </li>
            <li>
               <p class="para_item">The location of a grid point (P in <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/14topic_8.html#ref16198');return(false);">Figure 13-</a>) in this coordinate system is given by (X, Y, Z). 
               </p>
            </li>
            <li>
               <p class="para_item">The displacement coordinate directions at P are shown above by (<em>u<sub class="subscript">x</sub></em>, <em>u<sub class="subscript">u</sub></em>, <em>u<sub class="subscript">z</sub></em>). 
               </p>
            </li>
         </ol>
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