[Paraview] paraview .vtk file format.

[Martin Jørgensen]

Hi, thanks a lot for the comments...

There is so much information available around that it's difficult for  
me to figure out exactly where to look, if you understand..... I'll  
see if I can get my hands on the books... Untill then:

I actually got another question, because I changed the background  
color in paraview under windows xp. How to get the old background  
back? I tried to look for a configuration file but only found a file  
called #ParaViewlmk# under "C:\Documents and settings\(user)"

So what I need now is also information on the file format of these  
file.001, file.002, file.003 files... I thought that I could just  
rename the .vtk extension and change the data in the .001, .002, .003  
etc files, but that didn't work at all... The reader didn't knew what  
file format this was..

?

Regards,
Martin


On Apr 11, 2006, at 10:49 PM, Dominik Szczerba wrote:

> thats a lot of questions, I suggest to go one by one next time.
> - google for example files
> - study techdocs file formats pdf
> - browse the archives (for code samples)
> - buy the boox
> - try out, read the code
> - i dont think multiple time steps are possible in vtk format. keep  
> time
> data in files file.001 etc and PV will load them as time series.
> otherwise I hear ensight format supports that.
> good luck
> dominik
>
> Martin Jørgensen wrote:
>> Hi,
>>
>> I'm a complete newbie, so please don't be too hard on me if I ask
>> something stupid or if the information is clearly available  
>> somewhere  I
>> didn't look... I downloaded the "VTK file formats" pdf-file, but   
>> that's
>> a lot of information for a newbie... So:
>>
>> I've made a program in C that computes a couple of temperatures and
>> saves the result in a 2D-array as a function of timestep...  
>> (well,  the
>> 2D array is overwritten each timestep, but I want to save them in  a
>> file as a function of the timestep). And then I want to be able to
>> choose which time-step to look at in paraview...
>>
>> I've made this .vtk-file manually just to get a feeling of how it   
>> works
>> (here I'm only looking at 2 temperatures):
>>
>> - - - -
>> # vtk DataFile Version 2.0
>> Cube example
>> ASCII
>> DATASET POLYDATA
>> POINTS 12 float
>> 0.0 0.0 0.0
>> 0.4 0.0 0.0
>> 1.0 0.0 0.0
>> 0.0 1.0 0.0
>> 0.4 1.0 0.0
>> 1.0 1.0 0.0
>> 0.0 0.0 0.1
>> 0.4 0.0 0.1
>> 1.0 0.0 0.1
>> 0.0 1.0 0.1
>> 0.4 1.0 0.1
>> 1.0 1.0 0.1
>>
>>
>> POLYGONS 7 35
>> 4 0 1 4 3
>> 4 1 2 5 4
>> 4 6 8 11 9
>> 4 3 5 11 9
>> 4 0 2 8 6
>> 4 0 6 9 3
>> 4 2 8 11 5
>>
>> CELL_DATA 7
>> SCALARS temperature double 1
>> LOOKUP_TABLE default
>> 700.0
>> 500.0
>> 20.0
>> 20.0
>> 20.0
>> 20.0
>> 20.0
>>
>> - - - -
>> Questions:
>>
>> 1) The above works but how do I insert comments? For instance I would
>> like to be able to write "4 0 1 4 3      # front" and "0.0 0.0  0.1
>> # point 6", just as a reminder to myself... Is it possible?
>>
>> 2) How to insert additional time-steps??? For instance, the
>> temperatures at the next time-step could look like:
>>
>> LOOKUP_TABLE default
>> 675.4
>> 491.1
>> 35.2
>> 23.0
>> 20.2
>> 20.0
>> 20.0
>>
>> And for future time-steps I would get other temperatures etc...
>>
>> 3) I have a lot of problems figuring out how to program a more   
>> complex
>> method of storing the temperatures for each cell and  calculating the
>> points and figuring out how to connect these  points... Is there any
>> hints on doing this or perhaps somebody  already programmed  
>> something in C?
>>
>> Thanks in advance for any help...
>>
>>
>> Martin
>> _______________________________________________
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>> ParaView at paraview.org
>> http://www.paraview.org/mailman/listinfo/paraview
>
> -- 
> Dominik Szczerba, Dr.
> Computer Vision Lab CH-8092 Zurich
> http://www.vision.ee.ethz.ch/~domi