[Paraview] Paraview v 3.14, GradientOfUnstructuredDataSet1, vorticity

2012-06-06 Thread Ricardo Reis 


 When using the filter

 GradientOfUnstructuredDataSet1

 and selecting Vorticity, this result doesn't become available. On the 
other hand Q Criterion becomes available under the right moniker...


 Is this expected?

 best,

 Ricardo Reis

 --

 PhD/MSc Mechanical Engineering | Lic. Aerospace Engineering

 Computational Fluid Dynamics, High Performance Computing, Turbulence
 http://www.lasef.ist.utl.pt

 Cultural Instigator @ Rádio Zero
 http://www.radiozero.pt

 http://www.flickr.com/photos/rreis/

 contacts:  gtalk: kyriu...@gmail.com  skype: kyriusan

 Institutional Address:

 Ricardo J.N. dos Reis
 IDMEC, Instituto Superior Técnico, Technical University of Lisbon
 Av. Rovisco Pais
 1049-001 Lisboa
 Portugal

  - email sent with alpine 2.00 -___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the ParaView Wiki at: 
http://paraview.org/Wiki/ParaView

Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview

Re: [Paraview] Paraview v 3.14, GradientOfUnstructuredDataSet1, vorticity

2012-06-06 Thread Moreland, Kenneth 
I am guessing that Vorticity in your dataset is a 3D vector (which is
typical) and that Q Criterion is a scalar.

When you take the gradient of a vector, you get a 3x3 tensor (an estimate
of the Jacobian matrix, I believe).  These 9-tuples are not as widely
recognized in ParaView/VTK filters as scalars and vectors so they will not
be listed in selection combo boxes for inputs.  You should still see the
entry listed in the Information panel, though.

In contrast, when you take the gradient of a scalar, you get a vector,
which is understood by and leveraged by many filters.

-Ken



On 6/6/12 9:04 AM, "Ricardo Reis"  wrote:

>
>  When using the filter
>
>  GradientOfUnstructuredDataSet1
>
>  and selecting Vorticity, this result doesn't become available. On the
>other hand Q Criterion becomes available under the right moniker...
>
>  Is this expected?
>
>  best,
>
>  Ricardo Reis
>
>  --
>
>  PhD/MSc Mechanical Engineering | Lic. Aerospace Engineering
>
>  Computational Fluid Dynamics, High Performance Computing, Turbulence
>  http://www.lasef.ist.utl.pt
>
>  Cultural Instigator @ Rádio Zero
>  http://www.radiozero.pt
>
>  http://www.flickr.com/photos/rreis/
>
>  contacts:  gtalk: kyriu...@gmail.com  skype: kyriusan
>
>  Institutional Address:
>
>  Ricardo J.N. dos Reis
>  IDMEC, Instituto Superior Técnico, Technical University of Lisbon
>  Av. Rovisco Pais
>  1049-001 Lisboa
>  Portugal
>
>   - email sent with alpine 2.00 -


___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the ParaView Wiki at: 
http://paraview.org/Wiki/ParaView

Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview

Re: [Paraview] Paraview v 3.14, GradientOfUnstructuredDataSet1, vorticity

2012-06-06 Thread Ricardo Reis 

On Wed, 6 Jun 2012, Moreland, Kenneth wrote:


I am guessing that Vorticity in your dataset is a 3D vector (which is
typical) and that Q Criterion is a scalar.

When you take the gradient of a vector, you get a 3x3 tensor (an estimate
of the Jacobian matrix, I believe).  These 9-tuples are not as widely
recognized in ParaView/VTK filters as scalars and vectors so they will not
be listed in selection combo boxes for inputs.  You should still see the
entry listed in the Information panel, though.


This filter, besides calculating the gradient, gives me the option to also 
calculate


 Compute Vorticity
 Compute QCriterion

I'm starting from a velocity vector field. I would expect to obtain, 
after the filter and selecting all options:


 - a gradient (here it gives only 3 main directions)
 - a vorticity vector field
 - a scalar field with QCriterion

 Of these, the vorticity field is absent, even in the information panel.

 best,

 Ricardo Reis

 --

 PhD/MSc Mechanical Engineering | Lic. Aerospace Engineering

 Computational Fluid Dynamics, High Performance Computing, Turbulence
 http://www.lasef.ist.utl.pt

 Cultural Instigator @ Rádio Zero
 http://www.radiozero.pt

 http://www.flickr.com/photos/rreis/

 contacts:  gtalk: kyriu...@gmail.com  skype: kyriusan

 Institutional Address:

 Ricardo J.N. dos Reis
 IDMEC, Instituto Superior Técnico, Technical University of Lisbon
 Av. Rovisco Pais
 1049-001 Lisboa
 Portugal

  - email sent with alpine 2.00 -___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the ParaView Wiki at: 
http://paraview.org/Wiki/ParaView

Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview

Re: [Paraview] Paraview v 3.14, GradientOfUnstructuredDataSet1, vorticity

2012-06-06 Thread Andy Bauer 
Hi,

This filter is a bit confusing to use (along with being poorly named since
it works with image data, rectilinear grids, etc.). When you choose the
Vorticity it returns the vorticity instead of the gradient field. When you
select Q criterion it returns q criterion in addition to the other gradient
quantity. It's on my radar to clean this up but I haven't gotten around to
it yet.

Andy

On Wed, Jun 6, 2012 at 12:02 PM, Ricardo Reis  wrote:

> On Wed, 6 Jun 2012, Moreland, Kenneth wrote:
>
>  I am guessing that Vorticity in your dataset is a 3D vector (which is
>> typical) and that Q Criterion is a scalar.
>>
>> When you take the gradient of a vector, you get a 3x3 tensor (an estimate
>> of the Jacobian matrix, I believe).  These 9-tuples are not as widely
>> recognized in ParaView/VTK filters as scalars and vectors so they will not
>> be listed in selection combo boxes for inputs.  You should still see the
>> entry listed in the Information panel, though.
>>
>
> This filter, besides calculating the gradient, gives me the option to also
> calculate
>
>  Compute Vorticity
>  Compute QCriterion
>
> I'm starting from a velocity vector field. I would expect to obtain, after
> the filter and selecting all options:
>
>  - a gradient (here it gives only 3 main directions)
>  - a vorticity vector field
>  - a scalar field with QCriterion
>
>  Of these, the vorticity field is absent, even in the information panel.
>
>
>  best,
>
>  Ricardo Reis
>
>  --
>
>  PhD/MSc Mechanical Engineering | Lic. Aerospace Engineering
>
>  Computational Fluid Dynamics, High Performance Computing, Turbulence
>  http://www.lasef.ist.utl.pt
>
>  Cultural Instigator @ Rádio Zero
>  http://www.radiozero.pt
>
>  http://www.flickr.com/photos/**rreis/
>
>  contacts:  gtalk: kyriu...@gmail.com  skype: kyriusan
>
>  Institutional Address:
>
>  Ricardo J.N. dos Reis
>  IDMEC, Instituto Superior Técnico, Technical University of Lisbon
>  Av. Rovisco Pais
>  1049-001 Lisboa
>  Portugal
>
>  - email sent with alpine 2.00 -
>
> ___
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
> Follow this link to subscribe/unsubscribe:
> http://www.paraview.org/mailman/listinfo/paraview
>
>
___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the ParaView Wiki at: 
http://paraview.org/Wiki/ParaView

Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview

Re: [Paraview] Paraview v 3.14, GradientOfUnstructuredDataSet1, vorticity

2012-06-07 Thread Ricardo Reis 

On Wed, 6 Jun 2012, Andy Bauer wrote:


Hi,

This filter is a bit confusing to use (along with being poorly named since
it works with image data, rectilinear grids, etc.). When you choose the
Vorticity it returns the vorticity instead of the gradient field. When you
select Q criterion it returns q criterion in addition to the other gradient
quantity. It's on my radar to clean this up but I haven't gotten around to
it yet.


Ah, now it's clear :), thx

 best,

 Ricardo Reis

 --

 PhD/MSc Mechanical Engineering | Lic. Aerospace Engineering

 Computational Fluid Dynamics, High Performance Computing, Turbulence
 http://www.lasef.ist.utl.pt

 Cultural Instigator @ Rádio Zero
 http://www.radiozero.pt

 http://www.flickr.com/photos/rreis/

 contacts:  gtalk: kyriu...@gmail.com  skype: kyriusan

 Institutional Address:

 Ricardo J.N. dos Reis
 IDMEC, Instituto Superior Técnico, Technical University of Lisbon
 Av. Rovisco Pais
 1049-001 Lisboa
 Portugal

  - email sent with alpine 2.00 -___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the ParaView Wiki at: 
http://paraview.org/Wiki/ParaView

Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview