Hi Stanisław, all I have a follow up question about this. The options --noequispaced and -- useSessionExpansion helped me get the visualizations I want on quadrature points. However, it is still too coarse for me and I'd like to make a vtu file with more points. I am trying the module "interppoints" ./FieldConvert-g -m interppoints:fromxml=onlycube.xml:fromfld=onlycube.fld:line=100,-1,-1,-1,1,1,1 file2.vtu Interpolating: 99% [=================================================] Writing: "file2.vtu" Fatal : Level 0 assertion violation Where : ~/nektar++/library/FieldUtils/OutputModules/OutputVtk.cpp[86] Message : VTK output needs setting up for ePtsFile and ePtsLine terminate called after throwing an instance of 'Nektar::ErrorUtil::NekError' what(): Level 0 assertion violation Where : ~/nektar++/library/FieldUtils/OutputModules/OutputVtk.cpp[86] Message : *VTK output needs setting up for ePtsFile and ePtsLine* Can someone please explain this error message and how to resolve this. I assume the only output allowed in this module is .dat file because I am able to generate that without any problem. However, the .dat file lacks the geometry information. Also, how can I retain the time-series information in the above function. Does this only work on .fld files? I am looking for a way to merge the output of the above function (.dat file) to an existing vtu file. Any ideas would be greatly appreciated :) Thanks V On Tue, May 25, 2021 at 7:44 PM Vidhi Zala <vidhi.zala@utah.edu> wrote:

Hi Stanisław,

Thanks for suggesting this. Using only equispaced did not work for me. I tried the two options together --noequispaced and --useSessionExpansion and it worked!

Cheers, V

On Tue, May 25, 2021 at 10:52 PM Stanisław Gepner <sgepner@meil.pw.edu.pl> wrote:

...

Hi, Not sure if this is what you need, but there is a -n option to be used with a number of modes to be outputted. And one for not equispaced output. Type FieldConvert with no option for a concise help.

Cheers, Stan

25 maj 2021 18:56 Vidhi Zala <vidhi.zala@utah.edu> napisał(a):

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Hi,

I am wondering if there is a way to specify the number of points and basis type while converting chk -> vtu? I notice that irrespective of the quadrature points specified in the session file, the resulting vtu always has nummodes points. Any advice would be appreciated.

Thanks V

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-- ,-~~-.___._. / | ' \ | |--------. Vidhi Zala ( ) 0 | | | School of Computing \_/-, ,----' | | | Scientific Computing and Imaging Institute ==== !_!-v---v--. University of Utah / \-'~; .--------. / __/~| ._-""|| | vidhi.zala@utah.edu =( _____|_|____||________| http://sci.utah.edu/people/vidhi.html