[Paraview] Saving png files of animation

[Bryn Lloyd]

Hi Berk, hi users


In version 2 of pv, there was a way to write png files of an animation. 
In version 3 this has been replaced by the save animation (to avi) option.

Unfortunately this crashes on my system (Debian Sarge). I sometimes am 
even logged out after the crash and loose everything that was open/unsaved.

Is there another way in pv3 to save an animation, e.g. individual frames 
as .png images or similar?

If I had access to the render window in the programmable filter, I could 
maybe use a vtkWindowToImageFilter and a vtkPNGWriter. But as you 
recently explained these are not available. But it would be nice... :)


Thanks for any hints/help.

Cheers
Bryn





Berk Geveci wrote:
> Only a subset of VTK classes are accessible through ParaView's
> programmable filter. These are mostly classes in Common and Filtering.
> We have plans to change this. Having said that, you will never be able
> to create rendering object from the programmable filter. It is for
> filtering only. You have to use the python interface to the server
> manager (through the Python shell under the Tools menu) to create
> rendering objects. There is an introduction to this interface here:
> http://paraview.org/Wiki/images/f/f9/Servermanager2.pdf
> I am afraid this API is different than pure VTK API and more limited
> because of the client/server support (i.e. you don't have direct
> access to VTK objects, only to proxies). You'll probably end up
> creating a vtkSMDataLabelRepresentationProxy in some way.
> By the way, ParaView already supports labels but limits them to
> selections. Once you select a set of cells/points, you go to the
> selection inspector and turn on labels. The reason labels are limited
> to selections is due to poor rendering performance when a large number
> of labels are displayed. We have in the works a new labeling scheme
> that changes the number of labels based on the zoom level to give
> interactive performance.
> 
> -berk
> 
> On Mon, May 26, 2008 at 2:39 AM, Bryn Lloyd <blloyd at vision.ee.ethz.ch> wrote:
>> Hi users
>>
>>
>> I wanted to a vtkIdFilter and a vtkLabeledDataMapper in the python
>> programmable filter (in order to visualize point ids in pv3.3).
>>
>> Unfortunately, neither of these classes were located by the programmable
>> filter. I get following error message:
>>
>> AttributeError: 'module' object has no attribute vtkLabeledDataMapper'
>>
>>
>>
>> This simple python code fails:
>>
>> ------------
>>
>> from paraview import vtk
>> ldm = vtk.vtkLabeledDataMapper()
>>
>> ------------
>>
>>
>> Does anybody know what I am doing wrong, or why this does not work? I
>> checked if the vtk filters are in the paraview source directory: They are!
>>
>>
>> Thanks for any hints/help
>>
>>
>> Cheers, Bryn
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>> -------------------------------------------------
>> Bryn Lloyd
>> Computer Vision Laboratory
>> ETH Zürich, Sternwartstrasse 7
>> CH - 8092 Zürich, Switzerland
>> Tel: +41 44 63 27690
>> Fax: +41 44 63 21199
>> -------------------------------------------------
>>
>> _______________________________________________
>> ParaView mailing list
>> ParaView at paraview.org
>> http://www.paraview.org/mailman/listinfo/paraview
>>
> 


-- 
-------------------------------------------------
Bryn Lloyd
Computer Vision Laboratory
ETH Zürich, Sternwartstrasse 7
CH - 8092 Zürich, Switzerland
Tel: +41 44 63 27690
Fax: +41 44 63 21199
-------------------------------------------------