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      <title>Ellipse information</title>
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      <div class="title_topic2" id="xps10_pagetitle">Ellipse information</div>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('shared_func/05information_inf_ov_2.html');return(false);">Overview</a></p>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('shared_func/shared_func_inf_ht.html');return(false);">How To</a> 
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('shared_func/shared_func_inf_op.html');return(false);">Options </a></p>
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               <p class="para_td">Related Topics </p>
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      </table><br><p class="para_topic"> The Ellipse option calculates the physical properties of an ellipse. You can display the following properties of an ellipse:</p>
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            <p class="para_item"> Length of the semi-major and semi-minor axes with absolute and work coordinates of the center point  </p>
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            <p class="para_item"> Start and end of angles in the view in which the ellipse was created  </p>
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            <p class="para_item"> Angle of inclination of the major axis (rotation)  </p>
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            <p class="para_item"> Spread angles of the variables X and Y  </p>
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            <p class="para_item"> Absolute and work coordinates of the start and end points  </p>
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            <p class="para_item"> RHO value and the creation CSYS  </p>
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            <p class="para_item"> Angles of inclination of tangent lines at the start and end points </p>
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               <p class="para_td"> Spread One</p>
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               <p class="para_td"> The spread angle of the semi-major axis (Spread One) measures the distance from the maximum Y to the minimum Y.</p>
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               <p class="para_td"> Spread Two</p>
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               <p class="para_td"> The spread angle of the semi-minor axis (Spread Two) measures the distance from the maximum X to the minimum X.</p>
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      <p class="para_topic"> To display the next list of parameters, click OK.</p>
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                  <p class="para_note_body">  Some ellipse parameter items will be displayed only if the coordinate system that the ellipse was defined in coincides with the WCS. An ellipse will have a negative RHO value when the range of the ellipse exceeds 180 degrees and is less than 360 degrees.</p>
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