Re: [Paraview] Question about modify data in VTK files

[Li, Teng]

Hi Utkarsh,

Thanks! I will try to use Python instead of Matlab.

Best,
Teng


Teng Li

Master Candidate in Structures

Department of Civil and Environmental Engineering

University of Illinois at Urbana-Champaign

205 North Mathews Ave, Urbana, IL. 61801

Phone:(217)8196210, Email: teng...@illinois.edu




From: Utkarsh Ayachit [utkarsh.ayac...@kitware.com]
Sent: Friday, October 06, 2017 8:18 PM
To: Li, Teng
Cc: paraview@paraview.org
Subject: Re: [Paraview] Question about modify data in VTK files

You can do similar things simply using Python and numpy, instead of matlab. 
Numpy is included in the Python distributed with ParaView, so you can use it in 
pvpython or Python shell in the GUI to open csv [1] and process it add 
appropriate before saving out.


[1] 
https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.loadtxt.html

On Wed, Oct 4, 2017 at 11:45 PM, Li, Teng 
<teng...@illinois.edu<mailto:teng...@illinois.edu>> wrote:
Hi,

I have a question about modify the data in vtk files and then visualize them 
again in Paraview.

First, I have 118 vtk files which record the information of each time step. In 
order to process some data in my vtk files, I plan to store them as .CSV files. 
I saved them as points data files. However, I find that I need to save 118 CSV 
files and then process the data in each of them. And then I need to visualize 
each of them.

Because in every time step, I use the same method to modify specific data. I 
wonder is there a way that I can process all the data just one time so these 
specific data in every time step will be changed in the same way.

I know calculator works for some simple applications, such as add, minus. 
However, I might use some if else loops to modify the data. So I need to import 
the .CSV data into the Matlab to process them. And then import the modified 
.CSV files into Paraview to visualize the information.

Thanks!

Best,
Teng



Teng Li

Master Candidate in Structures

Department of Civil and Environmental Engineering

University of Illinois at Urbana-Champaign

205 North Mathews Ave, Urbana, IL. 61801

Phone:(217)8196210<tel:(217)%20819-6210>, Email: 
teng...@illinois.edu<mailto:teng...@illinois.edu>



___
Powered by www.kitware.com<http://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

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/paraview


___
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

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/paraview

Re: [Paraview] Question about modify data in VTK files

[Utkarsh Ayachit]

You can do similar things simply using Python and numpy, instead of matlab.
Numpy is included in the Python distributed with ParaView, so you can use
it in pvpython or Python shell in the GUI to open csv [1] and process it
add appropriate before saving out.


[1]
https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.loadtxt.html

On Wed, Oct 4, 2017 at 11:45 PM, Li, Teng  wrote:

> Hi,
>
> I have a question about modify the data in vtk files and then visualize
> them again in Paraview.
>
> First, I have 118 vtk files which record the information of each time
> step. In order to process some data in my vtk files, I plan to store them
> as .CSV files. I saved them as points data files. However, I find that I
> need to save 118 CSV files and then process the data in each of them. And
> then I need to visualize each of them.
>
> Because in every time step, I use the same method to modify specific data. I
> wonder is there a way that I can process all the data just one time so
> these specific data in every time step will be changed in the same way.
>
> I know calculator works for some simple applications, such as add, minus.
> However, I might use some if else loops to modify the data. So I need to
> import the .CSV data into the Matlab to process them. And then import the
> modified .CSV files into Paraview to visualize the information.
>
> Thanks!
>
> Best,
> Teng
>
>
> Teng Li
>
> Master Candidate in Structures
>
> Department of Civil and Environmental Engineering
>
> University of Illinois at Urbana-Champaign
>
> 205 North Mathews Ave, Urbana, IL. 61801
>
> Phone:(217)8196210 <(217)%20819-6210>, Email: teng...@illinois.edu
>
>
>
>
> ___
> 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
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/paraview
>
>
___
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

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/paraview