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 > > <question147...@answers.launchpad.net>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@lists.launchpad.net > > Unsubscribe : https://launchpad.net/~dolfin > > More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~dolfin Post to : dolfin@lists.launchpad.net Unsubscribe : https://launchpad.net/~dolfin More help : https://help.launchpad.net/ListHelp
