[Dune] save FoamGrid mesh
timo.koch at iws.uni-stuttgart.de
Tue Apr 3 10:11:27 CEST 2018
can you please ask such questions on the mailing list? This way others
can profit from the answers too (and you'll probably get an answer
For saving grids with associated data, we usually use the VTK format.
You can use the VTKWriter / VTKSequenceWriter classes and their
addCellData / addVertexData / write member functions for that. You can
easily view them with paraview.
If you want to write out a grid with data and read it in again later the
Dune Grid Format (DGF) is also an option. Use the class DGFWriter to
write out your grid and create a Dune::GridPtr for reading the file
again. There is also a Dune::GmshWriter now, so you can write to the
Gmsh file format (*.msh). However, data attached to cells has to have
integer format. So you attach a tag and store the data in a separate
data file where the data is associated with this tag. I haven't tried
but I would guess that these approaches preserve the ID set of
non-adaptive / static grids.
The VTK, DGF, Gmsh formats don't preserve the hierarchical grid
structure AFAIK (in case you use adaptive grids and you want to reload
the exact hierarchical structure e.g. to pause and resume a simulation).
For saving and reloading _adaptive_ grids you need to use the
Dune::BackupRestoreFacility as you tried. Unfortunately, this feature
is, at the moment, not implemented for FoamGrid.
On 31.03.2018 10:41, Ponomarev, Ilya wrote:
> Dear Timo,
> I have FoamGrid mesh 1d in 3d world and I need to save it to disk with
> additional datafields associated with vertices and cells.
> As I understand I could use Dune::BackupRestoreFacility for mesh and
> simple .txt for data, associated with id sets, but when I run program
> I get the mistake:
> Dune reported error: NotImplemented
> backup / restore not implemented.
> How can I save my grid, when I would like to preserve id set?
> Best regards,
Timo Koch phone: +49 711 685 64676
IWS, Universität Stuttgart fax: +49 711 685 60430
Pfaffenwaldring 61 email: timo.koch at iws.uni-stuttgart.de
D-70569 Stuttgart url: www.hydrosys.uni-stuttgart.de
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