<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#FFFFFF">
Hi Yao-Cheng,<br>
<br>
I was able to build the meshes for all these 3 files and
RandomFactor=1e-6:<br>
10K on Linux Mint 64bit, gmsh 2.8.5<br>
50K on Linux Mint 64bit, gmsh 2.8.5<br>
100K on Mac OS X 64bit, gmsh 2.8.4 (but I think it will work on
Linux as well)<br>
<br>
Best,<br>
Mikhail<br>
<br>
<br>
<div class="moz-cite-prefix">On 01/16/2015 01:11 AM, Yao-Cheng Tien
wrote:<br>
</div>
<blockquote
cite="mid:CAE2NXtRhawJsv7t6ZFGDxGC8Cw9=u1f7fTe98dqZLdBM1p30qw@mail.gmail.com"
type="cite">
<div dir="ltr">Hi Mikhail,
<div><br>
</div>
<div>I have attached three more testcases. I have tried to embed
10k, 50k, and 100k lines(with length 1) to a surface
separately. The element size is 1.</div>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">The issue is that the 2d
mesh(meshAdapt) works for 10k and 50k after setting the
Mesh.RandomFactor to 1e-6. However, the 100k one fails even
when I increase the Mesh.RandomFactor to 1e-4. The error
message is "Identical points in triangulation: increase
element size or Mesh.RandomFactor"</div>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">My questions are:</div>
<div class="gmail_extra">1. Is there any limit about the number
of embedded lines? 100k embedded lines are too much?</div>
<div class="gmail_extra">2. Any setting I missed to make it
work? </div>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">Thank you!</div>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">Best,</div>
<div class="gmail_extra">YC</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Jan 15, 2015 at 8:59 AM,
Yao-Cheng <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:yaocheng2010@gmail.com" target="_blank">yaocheng2010@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Hi
Mikhaul,<br>
<br>
My mistake. I'm trying different settings to fix that
actually. The original geo file indeed has lc=1 but still
fails. I have also tried lc=0.1 0.5.<br>
<br>
I know it's ok if I have only 1 line or even 10k lines.
But in my situation, I probably need to have up to 1
million lines. Any suggestion?<br>
<br>
Thank you.<br>
<br>
Best,<br>
YC<br>
> On Jan 15, 2015, at 6:26 AM, Mikhail Artemyev <<a
moz-do-not-send="true"
href="mailto:artemiev.mikhail@gmail.com" target="_blank">artemiev.mikhail@gmail.com</a>>
wrote:<br>
><br>
> Hi,<br>
><br>
> Your lines have length 1, while the characteristic
length of the mesh you defined was 10.<br>
> What happens if you set lc = 1?<br>
> With only one line embedded it works fine for me (and
RandomFactor=1e-8), but I didn't try for all 50K of them.<br>
><br>
> Best,<br>
> Mikhail<br>
<span>><br>
><br>
>> On 01/15/2015 02:29 AM, <a
moz-do-not-send="true"
href="mailto:gmsh-request@ace20.montefiore.ulg.ac.be"
target="_blank">gmsh-request@ace20.montefiore.ulg.ac.be</a>
wrote:<br>
>> Hi,<br>
>><br>
</span>>> I have encountered the issue "*Identical
points in triangulation: increase<br>
>> element size or Mesh.RandomFactor*" in my 2D
geometry file. After looking<br>
<div>
<div>>> into previous support mails, I changed the
Mesh.RandomFactor to 1e-8, 1e-7<br>
>> until 1e-2. However, it still fails. Could
you tell me what other option I<br>
>> should try since I am pretty new to Gmsh?<br>
>><br>
>> My geometry is simple. I have a surface with
size 1100 by 210. Also, there<br>
>> are 50K lines with length 1 embedded in that
surface.<br>
>><br>
>> Thanks for your help in advance!<br>
>><br>
>> Best,<br>
>> YC<br>
><br>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</blockquote>
<br>
</body>
</html>