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<p>Hi,</p>
<p>attached is the definition of the sphere. It states the radii of
the various shells at the beginning, so you can edit them as you
like. Creating a new mesh works as follows:</p>
<p>The installation has created a link to the "SimNIBS prompt" next
to the icon for the SimNIBS GUI.</p>
<p>1) start a simnibs prompt</p>
<p>2) inside, cd to the directory that contains the sphere.geo<br>
<br>
3) run:<br>
<br>
gmsh -format msh2 -bin -2 -3 -o sphere.msh sphere.geo<br>
python<br>
<br>
4) inside python , run:</p>
<p>m=mesh_io.read_msh('sphere.msh',buffered=True) # for the version
3.2.2<br>
# m=mesh_io.read_msh('sphere.msh') # otherwise<br>
m.elm.tag1[m.elm.elm_type == 2] += 1000<br>
m.elm.tag2 = m.elm.tag1<br>
mesh_io.write_msh(m,'sphere.msh')<br>
exit()<br>
</p>
<p>Note: the mesh_io.read_msh can be very slow, so you'll have to
wait a bit.<br>
</p>
<p>Can you remind me again on why you wanted the dB/dt?<br>
</p>
<p>Best regards,</p>
<p>Axel</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 2/4/2021 3:13 PM, Christian Heinesch
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:202102041414.114EDxru123195@mailgw1.uni-kl.de">
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<p class="MsoNormal"><span lang="DE-CH">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH">I have now gone deeper
into Simnibs, but there are two questions I am currently
dealing with, which I hope you could help me with, which
would help me a lot further. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH">First I wanted to ask if
it is possible to adjust the radius of the six-layer sphere
(sphere_midres. msh). <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH">I have taken up a lot of
time, but I have not found a solution yet.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH">The second question is
the subject of the last time, I have now found the data of
dA/dt and yet I am not sure how to get to dB/dt with the
help of the curvature, do you need the individual triangles
or the nodes here? <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH">I would very much
appreciate an answer. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH">With friendly<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH">Christian Heinesch</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<br>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Dr. Axel Thielscher
Associate Professor
Danish Research Center for Magnetic Resonance
Copenhagen University Hospital Hvidovre
DK-2650 Hvidovre, Denmark
<a class="moz-txt-link-abbreviated" href="http://www.drcmr.dk">www.drcmr.dk</a>
&
Department of Health Technology
Technical University of Denmark
DK-2800 Kgs. Lyngby
<a class="moz-txt-link-freetext" href="http://www.healthtech.dtu.dk/">http://www.healthtech.dtu.dk/</a></pre>
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