<div dir="ltr">On Tue, Apr 30, 2013 at 2:57 AM, Dharmendar Reddy <span dir="ltr"><<a href="mailto:dharmareddy84@gmail.com" target="_blank">dharmareddy84@gmail.com</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div><div>Hello,<br></div> I have a doubt about how the node ordering in plex submesh is created.<br>
<br></div>I create a oneD mesh along y-direction from a two dimensional square mesh in x-y direction. In the original mesh the nodes are indexed such that the count increase in y-direction first and then in x-direction.<br>
<br></div><div>Consider a 5 by 5 square mesh<br></div><div><br></div>Now the oneD subdm has 5 nodes and 4 cells<br><br></div>if the coordinates of the nodes is [0,1.0,2.0,3.0,4.0] in x and y drection<br><br></div>I see that cells in the subdm for x=1.0 have support:<br>
</div><div>Vertex id here is the numbering with respect to subdm.<br><br></div>cellId: vertexId ExpectedVertexId (or atleast i want this also this will be the<br> case for x = 0.0)<br>
<div><div><div><div> <br> 0 5 4 4 5<br clear="all"><div><div><div><div><div> 1 6 5 5 6<br> 2 7 6 6 7 <br> 3 8 7 7 8<br>
<br></div><div> Of course this is consistent with the node ordering in original dm but i i use the coordinates of the nodes i get detJacobain negative. <br><br></div><div>I am not sure if this make sense ....<br><br></div>
<div>Should not (or can ) the nodes in the subdm be reoriented such that they all have positive orientation ? <br></div></div></div></div></div></div></div></div></div></div></blockquote><div><br></div><div style>I am working all of this out now, which is why I have been slow in replying. I have a code that uses</div>
<div style>this call in every possible way, in all dimensions. I should be done this week.</div><div style><br></div><div style>You are correct that the orientation is likely off. That is what I am checking.</div><div style>
<br></div><div style> Thanks,</div><div style><br></div><div style> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>
<div><div><div><div><div><div><div></div><div>Since i am creating the subdm using indexset of a select points in original dm, i can see that the connectivity is preserved. <br>
<br></div><div>Should i create a new dm using DMcreatefromCellList after fixing the orientations ? but then i need maps from this dm to orignal dm to access the dof values. <br><br></div><div>Thanks<span class="HOEnZb"><font color="#888888"><br>
Reddy<br></font></span></div><span class="HOEnZb"><font color="#888888"><div>
-- <br>-----------------------------------------------------<br>Dharmendar Reddy Palle<br>Graduate Student<br>Microelectronics Research center,<br>University of Texas at Austin,<br>10100 Burnet Road, Bldg. 160<br>MER 2.608F, TX 78758-4445<br>
e-mail: <a href="mailto:dharmareddy84@gmail.com" target="_blank">dharmareddy84@gmail.com</a><br>Phone: <a href="tel:%2B1-512-350-9082" value="+15123509082" target="_blank">+1-512-350-9082</a><br>United States of America.<br>
Homepage: <a href="https://webspace.utexas.edu/~dpr342" target="_blank">https://webspace.utexas.edu/~dpr342</a><br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener
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