Re: [Paraview] How to merge .vtk files to visualize the result in Paraview

2016-11-07 Thread Shawn Waldon 
Hi Brennen,

ParaView has support for loading multiple files as a time series if you
name them file1.vtk, file2.vtk, etc.  We realize that sometimes these
multiple files are multiple blocks of output rather than multiple timesteps
so I recently implemented a filter that converts the time series into a
multiblock dataset by putting each time step into a block in the dataset.
You can use this with the existing reader to convert the time series that
ParaView thinks your data is into a multiblock dataset with all of the data
in it.  The new filter is called 'Group Time Steps' and is available in
master or the 5.2 release candidates.

HTH,
Shawn

On Sun, Sep 18, 2016 at 4:32 PM, Brennen Taylor 
wrote:

> Dear All,
>
> I am using Paraview in order to visualize the result produced by parallel
> program.
> Each processor currently outputs its own .vtk files , which corresponsd to
> the value of the fields in the domain.
>
> I would like to know if there is a way of merging these .vtk files into
> one .vtk file so that I can visualize using Paraview.
>
> Attaching the required .vtk files for the reference.
>
>
> Thanks in advance !!
>
> Best ,
>
> Brennen
>
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Re: [Paraview] How to merge .vtk files to visualize the result in Paraview

2016-09-19 Thread Ethan Hereth 
Furthermore, if you end up opening them all individually in paraview, you
can select all of the input files in Pipeline Browser and then run the
Group Datasets filter on them. This is a poor man's solution I think, but
in a pinch it works well.

Cheers!

Ethan Alan

On Mon, Sep 19, 2016 at 2:32 PM Christopher Neal <chrisn...@snumerics.com>
wrote:

> Hey Brennen,
>
> I’m not an expert at Paraview’s IO system, but I believe that individual
> .vtk files would have to be opened individually i.e. Paraview cannot stitch
> the .vtk files together.  If you want to be able to open a single file and
> have the data for each processor’s output file be shown in one coherent
> data set, then I think you should look into the parallel xml file format
> that Paraview uses.
>
> A PDF of VTK file formats (XML format is on page 11 of the document):
> http://www.vtk.org/wp-content/uploads/2015/04/file-formats.pdf
>
>
> There is probably a better way to do this, but this is what I would do.
> 1.) Write a paraview python script to first convert all of the .vtk files
> to the newer xml format.  See:
> http://stackoverflow.com/questions/26158599/how-to-convert-vtk-legacy-files-to-vtu-format
>
> You will have to use the correct writer to write the
> proper XML file format for your data set type – See page 12 of that
> file-formats pdf that I posted above to see what types exist for the
> datasets
>
> 2.) Let’s assume your data is unstructured. You will now have data for
> each sub-domain written to a bunch of .vtu files. One .vtu file per
> processor, just like the .vtk files.  You can stitch all of these files
> together by using the parallel file format that VTK supports ( see page 16
> of that pdf ). You just need to write out a .pvtu file that essentially
> just has a list containing the name of every .vtu file.
>
> 3.) Paraview should be able to open this new .pvtu file and display all of
> the data for all of the sub-domains.
>
> Again, your xml file type might be .vti, .vtp, etc. depending on the data
> type that is being written to the .vtk files, structured, image, poly, etc.
>
> Hope this helps. If anyone has a more straightforward solution please
> share it.
>
> Best regards,
>
> Chris Neal
>
>
>
>
>
> *From: *ParaView <paraview-boun...@paraview.org> on behalf of Brennen
> Taylor <taylorbrennen...@gmail.com>
> *Date: *Monday, September 19, 2016 at 12:13 AM
> *To: *<paraview@paraview.org>
> *Subject: *[Paraview] How to merge .vtk files to visualize the result in
> Paraview
>
>
>
> Dear All,
>
>
>
> I am using Paraview in order to visualize the result produced by parallel
> program.
>
> Each processor currently outputs its own .vtk files , which corresponsd to
> the value of the fields in the domain.
>
>
>
> I would like to know if there is a way of merging these .vtk files into
> one .vtk file so that I can visualize using Paraview.
>
>
>
>
>
>
>
> Thanks in advance !!
>
>
>
> Best ,
>
>
>
> Brennen
>
> ___ Powered by www.kitware.com
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html Please keep messages
> on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView
> Search the list archives at: http://markmail.org/search/?q=ParaView
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>
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>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
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Re: [Paraview] How to merge .vtk files to visualize the result in Paraview

2016-09-19 Thread Christopher Neal 
Hey Brennen,

I’m not an expert at Paraview’s IO system, but I believe that individual .vtk 
files would have to be opened individually i.e. Paraview cannot stitch the .vtk 
files together.  If you want to be able to open a single file and have the data 
for each processor’s output file be shown in one coherent data set, then I 
think you should look into the parallel xml file format that Paraview uses.

A PDF of VTK file formats (XML format is on page 11 of the document): 
http://www.vtk.org/wp-content/uploads/2015/04/file-formats.pdf


There is probably a better way to do this, but this is what I would do.
1.) Write a paraview python script to first convert all of the .vtk files to 
the newer xml format.  See: 
http://stackoverflow.com/questions/26158599/how-to-convert-vtk-legacy-files-to-vtu-format

    You will have to use the correct writer to write the proper XML 
file format for your data set type – See page 12 of that file-formats pdf that 
I posted above to see what types exist for the datasets

2.) Let’s assume your data is unstructured. You will now have data for each 
sub-domain written to a bunch of .vtu files. One .vtu file per processor, just 
like the .vtk files.  You can stitch all of these files together by using the 
parallel file format that VTK supports ( see page 16 of that pdf ). You just 
need to write out a .pvtu file that essentially just has a list containing the 
name of every .vtu file.

3.) Paraview should be able to open this new .pvtu file and display all of the 
data for all of the sub-domains.

Again, your xml file type might be .vti, .vtp, etc. depending on the data type 
that is being written to the .vtk files, structured, image, poly, etc.

Hope this helps. If anyone has a more straightforward solution please share it.


Best regards,

Chris Neal

 

 

From: ParaView <paraview-boun...@paraview.org> on behalf of Brennen Taylor 
<taylorbrennen...@gmail.com>
Date: Monday, September 19, 2016 at 12:13 AM
To: <paraview@paraview.org>
Subject: [Paraview] How to merge .vtk files to visualize the result in Paraview

 

Dear All,

 

I am using Paraview in order to visualize the result produced by parallel 
program. 

Each processor currently outputs its own .vtk files , which corresponsd to the 
value of the fields in the domain.

 

I would like to know if there is a way of merging these .vtk files into one 
.vtk file so that I can visualize using Paraview.

 

 

 

Thanks in advance !!

 

Best ,

 

Brennen

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[Paraview] How to merge .vtk files to visualize the result in Paraview

2016-09-18 Thread Brennen Taylor 
Dear All,

I am using Paraview in order to visualize the result produced by parallel
program.
Each processor currently outputs its own .vtk files , which corresponsd to
the value of the fields in the domain.

I would like to know if there is a way of merging these .vtk files into one
.vtk file so that I can visualize using Paraview.



Thanks in advance !!

Best ,

Brennen
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