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    <div class="moz-cite-prefix">Hi Matt,<br>
      <br>
      Thank you very much.<br>
      <br>
      Best,<br>
      Rongliang<br>
      <br>
      <br>
      On 06/08/2016 01:53 AM, Matthew Knepley wrote:<br>
    </div>
    <blockquote
cite="mid:CAMYG4Gmuxa22qFqk5YQx0FJ=aKiSiH0jOJ4vGGHvTS5SKiuckQ@mail.gmail.com"
      type="cite">
      <div dir="ltr">
        <div>On Tue, Jun 7, 2016 at 5:18 PM, Rongliang Chen <span
            dir="ltr"><<a moz-do-not-send="true"
              href="mailto:rl.chen@siat.ac.cn" target="_blank">rl.chen@siat.ac.cn</a>></span>
          wrote:<br>
        </div>
        <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">
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                <div>Hi Matt,<br>
                  <br>
                  I know how to label vertex (ex_get_node_set) and face
                  (ex_get_side_set), but do not know how to label the
                  edge for a 3D mesh. Can you give me an example for
                  that?<br>
                </div>
              </div>
            </blockquote>
            <div><br>
            </div>
            <div>You can label the faces, and then call
              DMPlexLabelComplete().</div>
            <div><br>
            </div>
            <div>  Thanks,</div>
            <div><br>
            </div>
            <div>    Matt</div>
            <div> </div>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <div bgcolor="#FFFFFF" text="#000000">
                <div> Thanks,<br>
                  Rongliang<br>
                  <pre cols="72">---------------------
Rongliang Chen,   PhD
Associate Professor

Laboratory for Engineering and Scientific Computing
Shenzhen Institutes of Advanced Technology
Chinese Academy of Sciences
Address: 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, Guangdong (518055), P. R. China
E-mail:  <a moz-do-not-send="true" href="mailto:rl.chen@siat.ac.cn" target="_blank">rl.chen@siat.ac.cn</a>
Phone: <a moz-do-not-send="true" href="tel:%2B86-755-86392312" value="+8675586392312" target="_blank">+86-755-86392312</a></pre>
                  On 06/07/2016 10:06 PM, Matthew Knepley wrote:<br>
                </div>
                <blockquote type="cite">
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                      <div class="gmail_quote">On Tue, Jun 7, 2016 at
                        3:05 PM, Rongliang Chen <span dir="ltr"><<a
                            moz-do-not-send="true"
                            href="mailto:rl.chen@siat.ac.cn"
                            target="_blank">rl.chen@siat.ac.cn</a>></span>
                        wrote:<br>
                        <blockquote class="gmail_quote" style="margin:0
                          0 0 .8ex;border-left:1px #ccc
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                          <div bgcolor="#FFFFFF" text="#000000">
                            <div>Hi Matt,<br>
                              <br>
                              Thanks for your reply. <br>
                              <br>
                              Yes, I only labels the vertex because I am
                              doing the finite element method where I
                              only need the vertex label. Do you mean
                              that I need to label the faces and get the
                              vertex label from the  face label?<br>
                            </div>
                          </div>
                        </blockquote>
                        <div><br>
                        </div>
                        <div>You need to label vertices and edges.</div>
                        <div><br>
                        </div>
                        <div>  Thanks,</div>
                        <div><br>
                        </div>
                        <div>    Matt</div>
                        <div> </div>
                        <blockquote class="gmail_quote" style="margin:0
                          0 0 .8ex;border-left:1px #ccc
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                          <div bgcolor="#FFFFFF" text="#000000">
                            <div> Thanks,<br>
                              Rongliang<br>
                              <br>
                              <br>
                              <br>
                              On 06/07/2016 09:51 PM, Matthew Knepley
                              wrote:<br>
                            </div>
                            <blockquote type="cite">
                              <div dir="ltr">
                                <div class="gmail_extra">
                                  <div class="gmail_quote">On Tue, Jun
                                    7, 2016 at 10:09 AM, Rongliang Chen
                                    <span dir="ltr"><<a
                                        moz-do-not-send="true"
                                        href="mailto:rl.chen@siat.ac.cn"
                                        target="_blank">rl.chen@siat.ac.cn</a>></span>
                                    wrote:<br>
                                    <blockquote class="gmail_quote"
                                      style="margin:0 0 0
                                      .8ex;border-left:1px #ccc
                                      solid;padding-left:1ex">Dear All,<br>
                                      <br>
                                      I am using the DMRefine_Plex to
                                      refine a mesh. In the coarse mesh,
                                      it has a label "Vertex Sets" to
                                      mark the boundary nodes. I found
                                      that the DMRefine_Plex did not
                                      refine this label.<br>
                                      <br>
                                      For example, in the coarse mesh,
                                      there are 100 nodes on the
                                      boundary, that is the number of
                                      nodes in the label is 100. In the
                                      refined mesh (uniformly refined),
                                      the number of nodes in the label
                                      should be larger than 100, but I
                                      found that this number is still
                                      100, which means the newly added
                                      nodes on the boundary were not
                                      added to the label.<br>
                                      <br>
                                      But I need a refined label to set
                                      the boundary conditions. Anyone
                                      can tell me how to get a refined
                                      Vertex Sets label?<br>
                                    </blockquote>
                                    <div><br>
                                    </div>
                                    <div>All operations are topological
                                      in Plex, not geometric. When we
                                      refine, we split edges (for
                                      instance) and the new vertex
                                      inserted</div>
                                    <div>inherits the labels from the
                                      edge that was split. I am guessing
                                      that you only labels the vertices.</div>
                                    <div><br>
                                    </div>
                                    <div>  Thanks,</div>
                                    <div><br>
                                    </div>
                                    <div>    Matt</div>
                                    <div> </div>
                                    <blockquote class="gmail_quote"
                                      style="margin:0 0 0
                                      .8ex;border-left:1px #ccc
                                      solid;padding-left:1ex"> Best
                                      regards,<br>
                                      Rongliang<br>
                                      <br>
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                                  <br>
                                  <br clear="all">
                                  <span class="HOEnZb"><font
                                      color="#888888"> <span><font
                                          color="#888888">
                                          <div><br>
                                          </div>
                                          -- <br>
                                          <div
                                            data-smartmail="gmail_signature">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</div>
                                        </font></span></font></span></div>
                                <span class="HOEnZb"><font
                                    color="#888888"> </font></span></div>
                              <span class="HOEnZb"><font color="#888888">
                                </font></span></blockquote>
                            <span class="HOEnZb"><font color="#888888">
                                <br>
                              </font></span></div>
                          <span class="HOEnZb"><font color="#888888"> </font></span></blockquote>
                        <span class="HOEnZb"><font color="#888888"> </font></span></div>
                      <span class="HOEnZb"><font color="#888888"> <br>
                          <br clear="all">
                          <div><br>
                          </div>
                          -- <br>
                          <div data-smartmail="gmail_signature">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</div>
                        </font></span></div>
                  </div>
                </blockquote>
                <br>
              </div>
            </blockquote>
          </div>
          <br>
          <br clear="all">
          <div><br>
          </div>
          -- <br>
          <div class="gmail_signature" data-smartmail="gmail_signature">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</div>
        </div>
      </div>
    </blockquote>
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