[Paraview] Unstructured rectilinear mesh vs legacy vtk format

[kenichiro yoshimi]

Hi,

I just sent an email with a typo. "Cell Data to Point Data" filter was
correct.

2018年5月20日(日) 13:30 kenichiro yoshimi <rccm.kyoshimi at gmail.com>:

> Hi Aniruddha,
>
> I think the reason why the data looks discontinuous is that it is
> defined as cell data. So the easiest way is to use "Point Data to Cell
> Data" filter to convert from cell data to point data, which is using a
> very basic straight averaging.
>
> Best Regards
>
> 2018-05-20 3:30 GMT+09:00 Aniruddha Panda <aniruddhamit at gmail.com>:
> > I have a cartesian grid on two different codes, one uses the legacy
> format
> > to write the data in vtk format where the co-ordinates of equidistant
> points
> > in x y and z directions are used and the associated velocity (or any
> other
> > state variable) values are written.
> >
> >
> > Whereas in the code which uses the unstructured dataset the each quadrant
> > extents are written and the associated cell data is written. Later the
> idea
> > is to have adaptive mesh refinement on this.
> >
> > When I visualise both the files ( lets say for flow through a square
> duct,
> > pic attached ) I see a smooth representation that paraview automatically
> > calculates for the mesh in case of vtk whereas it appears like a
> > discontinuous data in case of vtu ( i assume vtu does lead to a
> > discontinuous field) . May I know if there is a smoothing filter which
> > allows me to interpolate the data onto an equidistant point cloud in all
> > directions so as to have smooth profile in my postprocessing.
> >
> > Figure1. vtk flow through a square duct
> > Figure2 vtu flow through a square duct
> > Figure3 the velocity profile across the diagonal of the slice ( from vtk
> )
> > Figure4 the velocity profile across the diagonal of the slice ( from vtu)
> >
> > ---------------------------------
> >
> > With thanks & regards
> >
> > Aniruddha
> >
> >
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