<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div>Hi Burlen, Richard, Utkarsh,</div><div><br></div><div><br></div><div>Thanks for your advices.</div><div><br></div><div>I misunderstood that the Surface LIC Plugin should calculate</div><div>some kinds of the vector fields on surfaces.</div><div>My models are generated by NS solvers, so the surfaces have</div><div>non-zero vectors without slipping or moving wall.</div><div><br></div><div>For example, can I calculate surface friction vectors with ParaView?</div><div>I have flow fields and other physical constants.</div><div><br></div><div><br></div><div># Extracting issue was solved by using Extract Subset filter.</div><div># My meshes were structured grids of turbomachinery in this time,</div><div># so all the walls can be extracted by the ijk coordinates.</div><div><br></div><div><br></div><div>Magician</div><div><br></div><br>On Feb 10, 2014, at 23:42, <a href="mailto:paraview-request@paraview.org">paraview-request@paraview.org</a> wrote:<br><br><blockquote type="cite">Message: 5<br>Date: Mon, 10 Feb 2014 09:42:27 -0500<br>From: Utkarsh Ayachit <<a href="mailto:utkarsh.ayachit@kitware.com">utkarsh.ayachit@kitware.com</a>><br>To: Richard Grenon <<a href="mailto:richard.grenon@onera.fr">richard.grenon@onera.fr</a>><br>Cc: Magician <<a href="mailto:f_magician@mac.com">f_magician@mac.com</a>>, ParaView <<a href="mailto:paraview@paraview.org">paraview@paraview.org</a>><br>Subject: Re: [Paraview] Surface LIC Problem<br>Message-ID:<br><span class="Apple-tab-span" style="white-space: pre;"> </span><<a href="mailto:CADHSJjAZ3YS240zkyPRFfacg8HyMO6Wr6Q0hqubpuXHL0WyLyg@mail.gmail.com">CADHSJjAZ3YS240zkyPRFfacg8HyMO6Wr6Q0hqubpuXHL0WyLyg@mail.gmail.com</a>><br>Content-Type: text/plain; charset=ISO-8859-1<br><br>You could also either use "Extract Block" to remove blocks on which<br>you don't want to render LIC and then do LIC on the rest. There are<br>others ways for this subsetting too, based on the nature of your data:<br>e.g. you could your Extract Selection or Threshold to remove the cells<br>that you don't want to render LIC on and then render the result.<br><br>On Mon, Feb 10, 2014 at 3:57 AM, Richard Grenon <<a href="mailto:richard.grenon@onera.fr">richard.grenon@onera.fr</a>> wrote:<br></blockquote><blockquote type="cite"></blockquote><blockquote type="cite"><blockquote type="cite"></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Hello<br><br>Which vector field are you using with LIC ?<br><br>The LIC control panel allows to choose the vector to be used, and you <br>MUST choose a vector field that is NOT ZERO on the surface.<br><br>With Euler CFD results, the velocity vector is not zero at the wall, and <br>you can use this vector.<br><br>With Navier-Stokes CFD results, the velocity vector is zero at the wall, <br>and you have to use the skin friction vector instead.<br><br>Richard</blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"></blockquote><blockquote type="cite"><blockquote type="cite">On Feb 9, 2014, at 10:09, Burlen Loring <<a href="mailto:burlen.loring@gmail.com">burlen.loring@gmail.com</a>> wrote:</blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">I'm not 100% sure I understand the situation. A picture or sample dataset would help. Is it that some of the surfaces don't have the velocity field defined on them?<br><br>Burlen<br><br>On 02/08/2014 04:42 AM, Magician wrote:<br></blockquote><blockquote type="cite"><blockquote type="cite">I'm trying the Surface LIC Plugin.<br>My models are formatted as VTK MultiBlock Dataset, and there are geometries<br>of fluids and walls.<br>I'd like to visualize LIC on the walls.<br><br>First I applied Surface LIC to the walls, the results are something wrong.<br>Next to the fluids, they are OK.<br>But there are extra walls which I don't want to visualize (ex. Inlets/Outlets, external boundaries).<br>Maybe the reason of the walls are that they don't have the velocity values of main flows.<br><br>I also tried the Resample with Dataset filter for linking main flows to the walls.<br>The results are roughly good, but sometimes the resampling qualitys are poor (dropping the values).<br><br><br>Is there a good way to visualize the part of the walls' LIC?<br>My sources have complicated shapes, so I want to make the best use of the information of blocks of walls.<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br><br>Magician<br></blockquote></blockquote></blockquote></blockquote></body></html>