dolfin team mailing list archive

[JJ Jiang <question147820@xxxxxxxxxxxxxxxxxxxxx>]

Question #147820 on DOLFIN changed:
https://answers.launchpad.net/dolfin/+question/147820

    Status: Answered => Open

JJ Jiang is still having a problem:
Hi Johan and Kevin,
   Thanks for the notes. I think you can dump simulated temperature or mass to raw files. That can be manipulated when the mesh data are also given either in a vtu format or in a raw format. 
   By the way, I used Paraview to see the simulated "temperature" scalar has been attached to a vtu. Surprisingly, I couldn't read it out by its name. I don't know why.
   I guess Johan's suggestions will give users more flexibilities to handle the data. 
   Thanks again to both of you. 
Best regards,
--JJ

On 03/04/11, Johan Hake   wrote:
> Your question #147820 on DOLFIN changed:
> https://answers.launchpad.net/dolfin/+question/147820
> 
> Johan Hake proposed the following answer:
> Maybe Viper could provide a high level interface to read a vtu file into a 
> NumPy array, and a mesh into a coordinate and cell arrays?
> 
> Then we eventually can use this to pass data to Viper for plotting in the C++ 
> interface. This might fix the parallel ploting issue we have.
> 
> It would also be cool to implement a helper function in the Python interface 
> of DOLFIN that uses the potential added functionality in Viper to generate a 
> Function, with or without a given mesh. A FunctionSpace could be automatically 
> generated based on the dimensions of the data (is this true?) If a mesh is not 
> given we generate it based on the stored mesh data from the file.
> 
> Johan
> 
> 
> On Friday March 4 2011 11:30:52 Kent-Andre Mardal wrote:
> > Question #147820 on DOLFIN changed:
> > https://answers.launchpad.net/dolfin/+question/147820
> > 
> >     Status: Open => Answered
> > 
> > Kent-Andre Mardal proposed the following answer:
> > You should be able to use GetPointData().GetArray(). Have you looked at the
> > name of the variable in the vtu file? It is in ASCII format.
> > 
> > I attach something I did earlier.
> > 
> > Kent
> > 
> > On 4 March 2011 19:34, JJ Jiang
> > 
> > <question147820@xxxxxxxxxxxxxxxxxxxxx>wrote:
> > > New question #147820 on DOLFIN:
> > > https://answers.launchpad.net/dolfin/+question/147820
> > > 
> > > Hi all,
> > > 
> > >  I am running into a problem. I run the advection-diffusion demo. All the
> > > 
> > > simulated mass transport quantities u were save to a vtk PVD file with an
> > > unstructured mesh.
> > > 
> > > My question is how to read out the u from the associated individual vtu
> > > files. I thought  the u is attached to either PointData or CellData so
> > > that I can read out the scalar u using one of the following:
> > > grid->GetPointData()->GetArray('name');
> > > or
> > > grid->GetCellData()->GetArray('name');
> > > 
> > > But my attempts have failed. Please provide your advice. Thanks so much
> > > for your help!
> > > 
> > > Best regards,
> > > --JJ
> > > 
> > > 
> > > --
> > > You received this question notification because you are a member of
> > > DOLFIN Team, which is an answer contact for DOLFIN.
> > > 
> > > _______________________________________________
> > > Mailing list: https://launchpad.net/~dolfin
> > > Post to     : dolfin@xxxxxxxxxxxxxxxxxxx
> > > Unsubscribe : https://launchpad.net/~dolfin
> > > More help   : https://help.launchpad.net/ListHelp
> 
> -- 
> If this answers your question, please go to the following page to let us
> know that it is solved:
> https://answers.launchpad.net/dolfin/+question/147820/+confirm?answer_id=1
> 
> If you still need help, you can reply to this email or go to the
> following page to enter your feedback:
> https://answers.launchpad.net/dolfin/+question/147820
> 
> You received this question notification because you are a direct
> subscriber of the question.

--
+++++++++++++++++++++++++++++++++++
Jingfeng Jiang (JJ)
University of Wisconsin 
Medical Physics Department 
1530 Medical Sciences Center 
1300 University Avenue 
Madison, WI 53706 
Phone: (608) 262-4197
FAX: (608) 262-2413
+++++++++++++++++++++++++++++++++++

You received this question notification because you are a member of
DOLFIN Team, which is an answer contact for DOLFIN.