[Paraview] hyperstreamline visualization

Tue Dec 30 13:38:55 EST 2008

Hi Pierre,

The reason the filter does not show up is that it has the same name as
an existing one. Try changing the name from CellDerivatives to
CellDerivatives2.

-berk

On Thu, Dec 18, 2008 at 5:35 PM, Pierre JUILLARD
<pierre.juillard at gmail.com> wrote:
> Well, I exactly took the one printed on
> http://www.paraview.org/Wiki/ExtendingParaView#Enable_Existing_VTK_Class
>
> Here it is.
>
> Thanks in advance for your help!
>
> Pierre
>
>
>
>
>
> 2008/12/18 Berk Geveci <berk.geveci at kitware.com>
>>
>> Can you post your xml file?
>>
>> -berk
>>
>> On Thu, Dec 18, 2008 at 7:08 AM, Pierre JUILLARD
>> <pierre.juillard at gmail.com> wrote:
>> >
>> > I'm really sorry, I miss a key on my keyboard, and there was it, the
>> > mail
>> > already left...
>> >
>> > So, I wanted first pointing out a possible interesting feature: having
>> > two
>> > buttons when dealing with plug-ins:
>> >
>> > - "select" having the functionality of the current "load" one: selection
>> > of
>> > an XML file
>> > - a "load" or "apply" button to confirm the selection of the XML file
>> > and
>> > maybe achieving some controls:
>> >                        - is the file empty?
>> >                        - does it start with the
>> > <ServerManagerConfiguration>
>> > tag?
>> >                        - and so on... (well, the standard controls that
>> > allow the use of an XML file I guess...)
>> >
>> >
>> >
>> > Then, here is my main question: I'm not sure at all the loading worked
>> > correctly:
>> > Where am I supposed to find the loaded filter to apply it on an example?
>> >
>> > I went in the Filter tab and I couldn't see it anywhere...
>> >
>> > (see attached picture)
>> >
>> > I am of course not interest in the vtkCellDerivatives lcass: I know that
>> > it
>> > is availabe with the filter "Compute Derivatives".
>> > It is just a test.
>> >
>> > Could you point me out where is the mistake?
>> >
>> > I have to say that I didn't use any GUI XML, as it is said being
>> > "optional"
>> > in the page:
>> > http://www.paraview.org/Wiki/Plugin_HowTo#Enabling_a_filter_in_VTK
>> >
>> >
>> >
>> > In addition, just for information: where does the name displayed in the
>> > Filter tab comes from?
>> > Is it the value of the "SourceProxy" tag \"name" attribute?
>> > In this case, are we forced to prepend "vtk" from the vtk class name to
>> > obtain it?
>> > It would indeed mean that we cannot have blank in the name.
>> >
>> >
>> >
>> > Concerning the wiki, I have also few questions.
>> >
>> > - First, once I have this working for HyperStreamLine, I guess that it
>> > may
>> > interest other users.
>> > Wouldn't it be interesting to have a section in the wiki where users
>> > could
>> > drop validated server manager configuration files for VTK classes that
>> > could
>> > then be downloaded by others?
>> >
>> > - Finally, I found the old page:
>> > http://www.paraview.org/Wiki/ExtendingParaView#Enable_Existing_VTK_Class
>> > more detailed than the new one.
>> > Shouldn't they be merged?
>> >
>> > Tell me if I can help on this topic.
>> >
>> >
>> >
>> >
>> > Cheers,
>> >
>> > Pierre
>> >
>> >
>> >
>> >
>> > 2008/12/18 Pierre JUILLARD <pierre.juillard at gmail.com>
>> >>
>> >> Hi all!
>> >>
>> >> I had a look on the wiki, and indeed, one can find information at the
>> >> page
>> >> you pointed me:
>> >> http://www.paraview.org/Wiki/Plugin_HowTo#Enabling_a_filter_in_VTK
>> >> but also at that one:
>> >>
>> >> http://www.paraview.org/Wiki/ExtendingParaView#Enable_Existing_VTK_Class
>> >>
>> >> Very interesting information are given, however, I think I am missing
>> >> something.
>> >>
>> >> Just to try out, I copy/past the given Server Manager Configuration
>> >> file
>> >> in a xml, naming it "vtkCellDerivatives.xml".
>> >>
>> >> I loaded it as it is indicated (using the Plugins Manager), as shown on
>> >> the following picture.
>> >>
>> >> (By the way, I'm surprised that there is no confirmation of the correct
>> >> loading. It may be intersting to have two buttons:
>> >> - "select" having thefunctionality of the current "load" one: selection
>> >> of
>> >> an XML file
>> >> - "load" or "apply" confirming the selection of the XL file and may
>> >> achieveing some control:
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> 2008/12/9 David E DeMarle <dave.demarle at kitware.com>
>> >>>
>> >>> On Tue, Dec 9, 2008 at 9:55 AM, Pierre JUILLARD
>> >>> <pierre.juillard at gmail.com> wrote:
>> >>> >
>> >>> > Hi ParaView user,
>> >>> >
>> >>> >
>> >>> > Having stress tensor in VTK file, I would like to visualize them.
>> >>> >
>> >>> > Different solutions may exist:
>> >>> >
>> >>> >
>> >>> > 1). For instance, evaluate the principal components (vectors) from
>> >>> > stress
>> >>> > tensor and use the 'stream tracer' filter to visualize each
>> >>> > principal
>> >>> > component individually. However, in the 'Calculator' filter, I see
>> >>> > neither
>> >>> > 'extract principal component' function, nor the possibility to
>> >>> > interact
>> >>> > with
>> >>> > tensor at all: only the access to scalars and vectors is allowed.
>> >>> > Could you confirm me this?
>> >>> >
>> >>> >
>> >>> > 2). Another actually much more interesting way would be to use the
>> >>> > Hyperstreamline method available in the VTK library
>> >>> > (http://www.vtk.org/doc/release/5.2/html/a00565.html). Nonetheless,
>> >>> > I
>> >>> > don't
>> >>> > see the equivalent filter in ParaView.
>> >>> > Is there a way to 'activate' it simply in ParaView?
>> >>> > Or should an external filter be developped (based on the existing
>> >>> > VTK
>> >>> > class)?
>> >>> >
>> >>> >
>> >>> > I thank youfor your help!
>> >>> > Regards
>> >>> >
>> >>> >
>> >>> > Pierre
>> >>> > _______________________________________________
>> >>> > ParaView mailing list
>> >>> > ParaView at paraview.org
>> >>> > http://www.paraview.org/mailman/listinfo/paraview
>> >>> >
>> >>> >
>> >>>
>> >>>
>> >>> I  recommend solution 2.
>> >>> See
>> >>> http://www.paraview.org/Wiki/Plugin_HowTo#Enabling_a_filter_in_VTK
>> >>>
>> >>> --
>> >>> David E DeMarle
>> >>> Kitware, Inc.
>> >>> R&D Engineer
>> >>> 28 Corporate Drive
>> >>> Clifton Park, NY 12065-8662
>> >>> Phone: 518-371-3971 x109
>> >>
>> >
>> >
>> >
>> > _______________________________________________
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>> > ParaView at paraview.org
>> > http://www.paraview.org/mailman/listinfo/paraview
>> >
>> >
>
>