[Paraview] A bunch of novice user questions

[Paulo Alexandre Neves]

Dear David.

Thank you very much!

The problem was the selection of the data scalar data type.

Kind regards,
___________________________________________________________________
Paulo Alexandre Neves
Escola Superior de Tecnologia de Castelo Branco
Unidade Técnico-Cientifica de  Informática
http://di.est.ipcb.pt
E-mail: pneves at ipcb dot pt
Instituto de Telecomunicações (IT)
E-mail: pneves at co dot it dot pt



On 27/01/2011, at 18:29, David E DeMarle wrote:

> 2011/1/27 Paulo Alexandre Neves <paulo.alex.neves at gmail.com>:
>> Dear all.
>> My name is Paulo Neves and I am starting to use Paraview. I already did the
>> great Kenneth Moreland tutorial.
>> I downloaded and installed Paraview on a Mac OS X machine through the binary
>> dmg, running in standalone mode. Version is 3.8.1.
>> Here are my questions:
>> When trying to open a .raw data set, such as the one in attach, I get
>> errors, like
>> ERROR: In /Users/partyd/Kitware/ParaView-3.8/src/VTK/IO/vtkImageReader.cxx,
>> line 184
>> vtkMPIImageReader (0x126f74e70): File operation failed:
>> 18446744073709512510, ext: 0, 32, 0, 32, 0, 32
> 
> See below.
> 
>> The first thing that strikes me is where is /Users/partyd directory! I
>> cannot find this on my machine.
> 
> That is an artifact of the release packaging processes, you can safely
> ignore that. /Users/partyk/Kitware ... is just the directory where
> that binary image was originally built and it gets encoded into things
> like the error strings by the compiler.
> 
>> Second the dataset is 32x32x32, 8bit so why the errors?
> 
> Try extents of 0..31 0..31 0..31. You and ParaView are disagreeing on
> whether to count cells or points. It works fine on my 3.8.1 binary
> image.
> 
>> This leads me to another question: where is the source VTK files (like
>> vtkImageReader) on my machine? Do I need to download the source and compile
> 
> The binaries do not include the source code. If you want to make c++
> extensions to ParaView you have to download or git clone that
> separately.
> 
>> it to have access to this? Later on I would like to create my own
>> algorithms, so I will need to extend Paraview. Isn't the best way to write
>> such code through VTK?
> 
> Yes. It is almost always better to learn VTK data structures and
> filter concepts first, then wrap your VTK level code so that ParaView
> will include it. At the core ParaView is just a front end for VTK .
> 
>> Sorry for my newbie questions and thanks for your patience!
>> Kind regards,
> 
> No problem and good luck!
> 
>> ___________________________________________________________________
>> Paulo Alexandre Neves
>> Escola Superior de Tecnologia de Castelo Branco
>> Unidade Técnico-Cientifica de  Informática
>> http://di.est.ipcb.pt
>> E-mail: pneves at ipcb dot pt
>> Instituto de Telecomunicações (IT)
>> E-mail: pneves at co dot it dot pt
>> 
>> 
>> 
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