[Paraview] DATA ARRAYS

[Kent Eschenberg]

The contour filter will not be enabled unless the image has at least one scalar variable attached to each vertex (called point data).

For example, when I read a PNG image, the Information tab shows, under "Data Arrays", that there is one varialbe of type "3 - unsigned char" attached to each point. Since this is a vector, not a scalar, Contour is not enabled.

What type of image file are you reading with ParaView?

Kent

--On 11/22/2006 08:44:26 AM -0300 vpessoa at lncc.br wrote:
> Hi Kent.
> Thank you for your help.
> 
> I'm running Paraview 2.4 on linux (windows too, but the develp enviroment is
> linux).
> 
> The problem occurs after I run Voxel Grow filter on a vtkImageData.
> And yes, I can export that vtkImageData to other formats, visualize it using my
> widget and even apply other filters. No messages are shown. The contour filter
> just doesn't get enabled.
> My "Data Arrays" stays empty. I believe that is the problem. But at the same
> time, I don't know how to set it.
> 
> Any guess?
> 
> Thank's in advance!
> ----------------------------------------
> Atencisamente,
> Vinicius Pessôa
> Laboratório Nacional de Computação Científica
> +55 (24) 2233-6098
> +55 (24) 8803-7061
> 
> 
> 
> Quoting Kent Eschenberg <eschenbe at psc.edu>:
> 
>> It would help if you could say
>>    - ParaView version
>>    - operatiing system and version
>>    - type of image file
>>    - can you display the image file with other programs?
>>    - are there any messages in the window from which you started PV?
>> 
>> Kent
>> 
>> --On 11/21/2006 03:41:38 PM -0300 vpessoa at lncc.br wrote:
>> > Hi all.
>> > 
>> > I'm having a problem with vtkImageData data arrays. When I "Accept" my
>> filter,
>> > it does all the processament that it should.
>> > 
>> > The problem is right after that, the the Data Array (on the information
>> tab) of
>> > my filter remains empty, and I don't know how to set that information. I
>> want
>> > to run the contour filter on the result of my filter, and I believe that
>> the
>> > contour filter doesn't get enabled because of that non filled data array.
>> > 
>> > Can anyone PLEASE help me?
>> > 
>> > Thank's in advance!
>> > ----------------------------------------
>> > Atencisamente,
>> > Vinicius Pessôa
>> > Laboratório Nacional de Computação Científica
>> > +55 (24) 2233-6098
>> > +55 (24) 8803-7061