[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Getfem-users] gradient interpolation matrix
From: |
Yves Renard |
Subject: |
Re: [Getfem-users] gradient interpolation matrix |
Date: |
Sun, 5 Nov 2017 16:11:07 +0100 (CET) |
Dear Edouard,
No, unfortunately, there is no function in Getfem that gives the interpolation
matrix for a derivative of a field. You can perform the interpolation itself
with the high level generic assembly, but it does not give an interpolation
matrix. If you want to interpolate on a discontinuous fem, you can instead
compute the projection matrix which will be easy to invert because it will be
local (a small matrix on each element). Then if your projection is exact, then
the inverse will also be an interpolation matrix ...
Best regards,
Yves.
----- Original Message -----
From: "EDOUARD OUDET" <address@hidden>
To: address@hidden
Sent: Friday, November 3, 2017 11:43:34 AM
Subject: [Getfem-users] gradient interpolation matrix
Dear all,
Is there a way with the getfem python interface to assembly the matrix
associated to the interpolation matrix of a first derivative evaluation of a
fem (or its full gradient).
I found
Mi = asm_interpolation_matrix(MeshFem mf, vec pts)
for the evaluation of the function u = MeshFem mf itself, but I was not able to
identify the relevant generalization for derivatives of u: \partial u_x,
\partial u_y, etc.
Thanks a lot for this great library,
best, Edouard.
--
Edouard Oudet : http://www-ljk.imag.fr/membres/Edouard.Oudet/
IMAG - Bureau 164
700 avenue Centrale
38400 Saint Martin d'Hères
+33 (0)4 57 42 17 71 (office LJK)
+33 (0)4 79 68 82 06 (home)
- [Getfem-users] gradient interpolation matrix, EDOUARD OUDET, 2017/11/03
- Re: [Getfem-users] gradient interpolation matrix,
Yves Renard <=
- Re: [Getfem-users] gradient interpolation matrix, EDOUARD OUDET, 2017/11/05
- Message not available
- Re: [Getfem-users] gradient interpolation matrix, Yves Renard, 2017/11/06
- Re: [Getfem-users] gradient interpolation matrix, EDOUARD OUDET, 2017/11/06
- Re: [Getfem-users] gradient interpolation matrix, EDOUARD OUDET, 2017/11/06
- Re: [Getfem-users] gradient interpolation matrix, Yves Renard, 2017/11/06
- Re: [Getfem-users] gradient interpolation matrix, EDOUARD OUDET, 2017/11/07
- Re: [Getfem-users] gradient interpolation matrix, Yves Renard, 2017/11/07
- Re: [Getfem-users] gradient interpolation matrix, EDOUARD OUDET, 2017/11/07
Re: [Getfem-users] gradient interpolation matrix, EDOUARD OUDET, 2017/11/16