[Paraview] Bug in ExtractBlock?

[Fred Fred]

Ok both solutions works well, although MergeBlock makes a conversion, which could actually be desirable.This raises a question: except from being a more economic storage scheme, is there any benefit of having a curvilinear grid rather than an unstructured one, regarding algorithm complexity? My particular concern is to determine which cells of 2 grids intersect the other grid.Anyway thx for your help.
> From: dave.demarle at kitware.com
> Date: Tue, 8 Nov 2011 12:53:25 -0500
> Subject: Re: [Paraview] Bug in ExtractBlock?
> To: stan1313 at hotmail.fr
> CC: utkarsh.ayachit at kitware.com; paraview at paraview.org
> 
> Actually, a better solution is to apply the Merge Blocks filter after
> the Extract Block filter. Then you shouldn't have to save and reopen.
> 
> But to answer your question, save it as a vtm file and then open up
> the directory pointed to by the .vtm file and open up the one vtk file
> inside.
> 
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
> 
> 
> 
> On Tue, Nov 8, 2011 at 12:43 PM, Fred Fred <stan1313 at hotmail.fr> wrote:
> > Hmmm, how do you do it?
> > If I use the Save Data submenu, I am asked to save it as a multi-block
> > dataset and, as expected, I get back a multiblock dataset when I read it
> > again!
> >
> >> From: dave.demarle at kitware.com
> >> Date: Tue, 8 Nov 2011 07:20:47 -0500
> >> Subject: Re: [Paraview] Bug in ExtractBlock?
> >> To: utkarsh.ayachit at kitware.com
> >> CC: stan1313 at hotmail.fr; paraview at paraview.org
> >>
> >> A work around is to write out the data and read it back in.
> >>
> >> David E DeMarle
> >> Kitware, Inc.
> >> R&D Engineer
> >> 21 Corporate Drive
> >> Clifton Park, NY 12065-8662
> >> Phone: 518-881-4909
> >>
> >>
> >>
> >> On Tue, Nov 8, 2011 at 7:15 AM, Utkarsh Ayachit
> >> <utkarsh.ayachit at kitware.com> wrote:
> >> > Nope, that's expected behavior. ExtractBlock will always still produce
> >> > a multi-block dataset. Without going too much into details, the
> >> > requirements of VTK pipeline make it tricky to write a filter that
> >> > produces a structured data-set from by extracting a block from a input
> >> > composite dataset.
> >> >
> >> > On Mon, Nov 7, 2011 at 6:38 AM, Fred Fred <stan1313 at hotmail.fr> wrote:
> >> >> Hello,
> >> >> I have a dataset that is actually a multi-block with just a single
> >> >> curvilinear block and I would like to convert it in a simple
> >> >> curvilinear
> >> >> dataset. I expected that ExtractBlock would make the job, since it is
> >> >> supposed to delete the umbrella structure when just a single block
> >> >> remains
> >> >> and the Prune Output option is selected, which is teh default BTW.
> >> >> But the output is exactly the same as the input.
> >> >> Bug of the ExtractBlock implementation?
> >> >> Configuration: ParaView-3.10.1 64 bits Mac OsX Snow Leopard
> >> >>
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