[Paraview] Calculator filter

[Liam Healy]

I am trying to compute a quantity based on two 3-vectors as input. All
six components are in six columns of one (csv) file, so I read that in
and create two Table to Points filters. I would like to bring up the
calculator to compute the magnitudes of each vector, but if I
highlight the two filters I cannot select the Calculator tool, it is
greyed out. How do I do computations on two (or more) inputs?

Thanks,
Liam
___
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

Search the list archives at: http://markmail.org/search/?q=ParaView

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/paraview

Re: [Paraview] Calculator filter

[David E DeMarle]

The Python Calculator will accept multiple sources so I recommend that.
Otherwise you will need to apply something like the Append or Merge filter
to produce one source for the standard Calculator's input.

David E DeMarle
Kitware, Inc.
R Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Tue, Nov 10, 2015 at 2:30 PM, Liam Healy 
wrote:

> I am trying to compute a quantity based on two 3-vectors as input. All
> six components are in six columns of one (csv) file, so I read that in
> and create two Table to Points filters. I would like to bring up the
> calculator to compute the magnitudes of each vector, but if I
> highlight the two filters I cannot select the Calculator tool, it is
> greyed out. How do I do computations on two (or more) inputs?
>
> Thanks,
> Liam
> ___
> 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
>
> Search the list archives at: http://markmail.org/search/?q=ParaView
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/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

Search the list archives at: http://markmail.org/search/?q=ParaView

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/paraview

Re: [Paraview] Calculator filter

[Liam Healy]

Thanks for the advice. Indeed, I can select the two filter outputs and
start up a Python Calculator. Now however, I am stumped: I don't know
how to specify the input vectors which Table to Points created. The
spreadsheet view shows all the fields, and a points column which
happens to be the second vector. I don't know where the first one
went. I was able to find http://www.vtk.org/Wiki/Python_Calculator
which is a nice illustration of capability, but it's not specified
there how "BrownianVectors" got named. If I do mag(Points)
(Points=name at top of spreadsheet) or mag(points) or mag(Position)
(Position = name of my first filter) or mag(input[0]), I get an error.
I've tried looking through the documentation but I'm not even sure
where to look.

Thanks,
Liam

On Tue, Nov 10, 2015 at 2:34 PM, David E DeMarle
 wrote:
> The Python Calculator will accept multiple sources so I recommend that.
> Otherwise you will need to apply something like the Append or Merge filter
> to produce one source for the standard Calculator's input.
>
> David E DeMarle
> Kitware, Inc.
> R Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
> On Tue, Nov 10, 2015 at 2:30 PM, Liam Healy 
> wrote:
>>
>> I am trying to compute a quantity based on two 3-vectors as input. All
>> six components are in six columns of one (csv) file, so I read that in
>> and create two Table to Points filters. I would like to bring up the
>> calculator to compute the magnitudes of each vector, but if I
>> highlight the two filters I cannot select the Calculator tool, it is
>> greyed out. How do I do computations on two (or more) inputs?
>>
>> Thanks,
>> Liam
>> ___
>> 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
>>
>> Search the list archives at: http://markmail.org/search/?q=ParaView
>>
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/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

Search the list archives at: http://markmail.org/search/?q=ParaView

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/paraview

[Paraview] calculator - lock in current values over time

[Timothy Charles Fagan]

Hi

I am using a calculator filter to get the y co-ordinates for a series of
particles. I am then using that data to color by y position. However this
color is changing over time as the particles move. I would like to lock
in the first value, ie the original y position of the particles. Is this
possible?

Is there a function in the calculator or maybe a filter I can add to make
sure the calculator data table isn't updated at every time increment?

cheers,
Tim
___
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://public.kitware.com/mailman/listinfo/paraview

Re: [Paraview] calculator tensor field

[Utkarsh Ayachit]

Gianna,

For Calculator filter,  names with _X, _Y have special meaning.
Try change Calulators 1-9 to use Result Array names as sigmaXX,
sigmaYY, etc.
Does that work?

Utkarsh

On Mon, Oct 6, 2014 at 6:31 PM,  marschm...@stud.uni-heidelberg.de wrote:
 Hello Utkarsh,
 thanks for looking at it.
 Attached is the state file:
 - Calculators 1-6 calculate the 6 independent components of the symmetric
 stress tensor sigma_ij

 - Calculators 7-9 calculate the traction vectors s_i from the stress
 components (s_i = sigma_ij e_j , summation over j implied, e_j basis
 vectors)

 Now in another calculator I'd like to compute the stress tensor field,
 either directly from the stress components sigma_ij or from the traction
 vectors. Both approaches fail with the error message.
 The stress tensor is given by
 sigma =
 sigma_xx(e_x*e_x)+sigma_yy(e_y*e_y)+sigma_zz(e_z*_ez)+sigma_xy)(e_xe_y+e_ye_x)+sigma_xz(e_xe_z+e_ze_x)+sigma_yz(e_ye_z+e_ze_y)
 equivalent to
 sigma = s_x*e_x + s_y*e_y +s_z*e_z

 Thanks,
 Gianna



 Quoting Utkarsh Ayachit utkarsh.ayac...@kitware.com:

 Can you attach a sample data file/state file? That'll make it easier
 to identify the problem and suggest a solution.

 Thanks
 Utkarsh

 On Sat, Oct 4, 2014 at 4:14 AM,  marschm...@stud.uni-heidelberg.de
 wrote:

 Hello everyone,

 I have three displacement field vector components u, v, w in my .vtk file
 and wish to display the associated stress tensor.
 I made the following steps:

 - Apply the filter Gradient Of Unstructued DataSet
 - Now have 9 scalars Gradient_0, ... , Gradient 8

 - compute components of stress tensor via sigma_ij = div(Gradient) +
 u_i,j
 - Now have additional 9 scalars sigma_ij

 - from this form traction vectors:
 T_i = sigma_ij e_j   ,where e_j are the unit vectors iHat

 - Now have three traction vectors from which the tensor field
 computation
 doesnt work:

 - I do Result = T_1*iHat + T_2*jHat + T_3*kHat for the tensor calculation
 and get the following error message:

 ERROR: In

 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
 line 201
 vtkFunctionParser (0x205ddac0): Parse: Error deciding between ambiguous
 operators


 ERROR: In

 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
 line 300
 vtkFunctionParser (0x205ddac0): expecting either 2 scalars or a scalar
 and a
 vector


 ERROR: In

 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
 line 201
 vtkFunctionParser (0x205ddac0): Parse: Error deciding between ambiguous
 operators


 - Can you help me or tell me gow to visualize the stress tensor from the
 displacement field?
 - Alternatively you it would also be good to know how to multiply the
 result
 of  filter Gradient of Unstructured DataSet by a scalar value.


 Many thanks for helping!
 Gianna

 ___
 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://public.kitware.com/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://public.kitware.com/mailman/listinfo/paraview

Re: [Paraview] calculator tensor field

[Marschmann]

Dear Utkarsh,

I changed the Result Array names to sigmaXX etc but still get the same  
error message.

I think the problem is with the product between the two unit vectors.
Simply calculating for example  iHat*iHat  yields the same error message.

Would you know in general how to form a tensor field in paraview from  
its components?


Thanks,
Gianna









Quoting Utkarsh Ayachit utkarsh.ayac...@kitware.com:


Gianna,

For Calculator filter,  names with _X, _Y have special meaning.
Try change Calulators 1-9 to use Result Array names as sigmaXX,
sigmaYY, etc.
Does that work?

Utkarsh

On Mon, Oct 6, 2014 at 6:31 PM,  marschm...@stud.uni-heidelberg.de wrote:

Hello Utkarsh,
thanks for looking at it.
Attached is the state file:
- Calculators 1-6 calculate the 6 independent components of the symmetric
stress tensor sigma_ij

- Calculators 7-9 calculate the traction vectors s_i from the stress
components (s_i = sigma_ij e_j , summation over j implied, e_j basis
vectors)

Now in another calculator I'd like to compute the stress tensor field,
either directly from the stress components sigma_ij or from the traction
vectors. Both approaches fail with the error message.
The stress tensor is given by
sigma =
sigma_xx(e_x*e_x)+sigma_yy(e_y*e_y)+sigma_zz(e_z*_ez)+sigma_xy)(e_xe_y+e_ye_x)+sigma_xz(e_xe_z+e_ze_x)+sigma_yz(e_ye_z+e_ze_y)
equivalent to
sigma = s_x*e_x + s_y*e_y +s_z*e_z

Thanks,
Gianna



Quoting Utkarsh Ayachit utkarsh.ayac...@kitware.com:


Can you attach a sample data file/state file? That'll make it easier
to identify the problem and suggest a solution.

Thanks
Utkarsh

On Sat, Oct 4, 2014 at 4:14 AM,  marschm...@stud.uni-heidelberg.de
wrote:


Hello everyone,

I have three displacement field vector components u, v, w in my .vtk file
and wish to display the associated stress tensor.
I made the following steps:

- Apply the filter Gradient Of Unstructued DataSet
- Now have 9 scalars Gradient_0, ... , Gradient 8

- compute components of stress tensor via sigma_ij = div(Gradient) +
u_i,j
- Now have additional 9 scalars sigma_ij

- from this form traction vectors:
T_i = sigma_ij e_j   ,where e_j are the unit vectors iHat

- Now have three traction vectors from which the tensor field
computation
doesnt work:

- I do Result = T_1*iHat + T_2*jHat + T_3*kHat for the tensor calculation
and get the following error message:

ERROR: In

/home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
line 201
vtkFunctionParser (0x205ddac0): Parse: Error deciding between ambiguous
operators


ERROR: In

/home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
line 300
vtkFunctionParser (0x205ddac0): expecting either 2 scalars or a scalar
and a
vector


ERROR: In

/home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
line 201
vtkFunctionParser (0x205ddac0): Parse: Error deciding between ambiguous
operators


- Can you help me or tell me gow to visualize the stress tensor from the
displacement field?
- Alternatively you it would also be good to know how to multiply the
result
of  filter Gradient of Unstructured DataSet by a scalar value.


Many thanks for helping!
Gianna

___
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://public.kitware.com/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://public.kitware.com/mailman/listinfo/paraview

Re: [Paraview] calculator tensor field

[Andy Bauer]

This may be easier to do in the Python Calculator, which is more efficient
anyway. For accessing a specific component of a vector you can do something
like Normals[:,0]. For a 2nd order tensor you'd do something like
StrainRate[:,0,1].

On Tue, Oct 7, 2014 at 2:51 PM, marschm...@stud.uni-heidelberg.de wrote:

 Dear Utkarsh,

 I changed the Result Array names to sigmaXX etc but still get the same
 error message.
 I think the problem is with the product between the two unit vectors.
 Simply calculating for example  iHat*iHat  yields the same error message.

 Would you know in general how to form a tensor field in paraview from its
 components?

 Thanks,
 Gianna









 Quoting Utkarsh Ayachit utkarsh.ayac...@kitware.com:

  Gianna,

 For Calculator filter,  names with _X, _Y have special meaning.
 Try change Calulators 1-9 to use Result Array names as sigmaXX,
 sigmaYY, etc.
 Does that work?

 Utkarsh

 On Mon, Oct 6, 2014 at 6:31 PM,  marschm...@stud.uni-heidelberg.de
 wrote:

 Hello Utkarsh,
 thanks for looking at it.
 Attached is the state file:
 - Calculators 1-6 calculate the 6 independent components of the symmetric
 stress tensor sigma_ij

 - Calculators 7-9 calculate the traction vectors s_i from the stress
 components (s_i = sigma_ij e_j , summation over j implied, e_j basis
 vectors)

 Now in another calculator I'd like to compute the stress tensor field,
 either directly from the stress components sigma_ij or from the traction
 vectors. Both approaches fail with the error message.
 The stress tensor is given by
 sigma =
 sigma_xx(e_x*e_x)+sigma_yy(e_y*e_y)+sigma_zz(e_z*_ez)+
 sigma_xy)(e_xe_y+e_ye_x)+sigma_xz(e_xe_z+e_ze_x)+sigma_yz(e_ye_z+e_ze_y)
 equivalent to
 sigma = s_x*e_x + s_y*e_y +s_z*e_z

 Thanks,
 Gianna



 Quoting Utkarsh Ayachit utkarsh.ayac...@kitware.com:

  Can you attach a sample data file/state file? That'll make it easier
 to identify the problem and suggest a solution.

 Thanks
 Utkarsh

 On Sat, Oct 4, 2014 at 4:14 AM,  marschm...@stud.uni-heidelberg.de
 wrote:


 Hello everyone,

 I have three displacement field vector components u, v, w in my .vtk
 file
 and wish to display the associated stress tensor.
 I made the following steps:

 - Apply the filter Gradient Of Unstructued DataSet
 - Now have 9 scalars Gradient_0, ... , Gradient 8

 - compute components of stress tensor via sigma_ij = div(Gradient) +
 u_i,j
 - Now have additional 9 scalars sigma_ij

 - from this form traction vectors:
 T_i = sigma_ij e_j   ,where e_j are the unit vectors iHat

 - Now have three traction vectors from which the tensor field
 computation
 doesnt work:

 - I do Result = T_1*iHat + T_2*jHat + T_3*kHat for the tensor
 calculation
 and get the following error message:

 ERROR: In

 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/
 Common/Misc/vtkFunctionParser.cxx,
 line 201
 vtkFunctionParser (0x205ddac0): Parse: Error deciding between ambiguous
 operators


 ERROR: In

 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/
 Common/Misc/vtkFunctionParser.cxx,
 line 300
 vtkFunctionParser (0x205ddac0): expecting either 2 scalars or a scalar
 and a
 vector


 ERROR: In

 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/
 Common/Misc/vtkFunctionParser.cxx,
 line 201
 vtkFunctionParser (0x205ddac0): Parse: Error deciding between ambiguous
 operators


 - Can you help me or tell me gow to visualize the stress tensor from
 the
 displacement field?
 - Alternatively you it would also be good to know how to multiply the
 result
 of  filter Gradient of Unstructured DataSet by a scalar value.


 Many thanks for helping!
 Gianna

 ___
 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://public.kitware.com/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://public.kitware.com/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://public.kitware.com/mailman/listinfo/paraview

Re: [Paraview] calculator tensor field

[Cory Quammen]

Gianna,

If I understand correctly, you are trying to multiply a row vector [a,
b, c] by a column vector [d, e, f]^T (where ^T indicates transpose) to
get a matrix. Actually, you are doing this three times and then
summing the resulting matrices to get a tensor matrix. Is that
correct?

If that its the case, I do not believe it is possible to produce a
matrix output. Like Andy, I suggest using the Python Calculator.
Documentation is available here:

http://www.itk.org/Wiki/ParaView/Users_Guide/Python_Calculator

Hope that helps,
Cory

On Tue, Oct 7, 2014 at 2:51 PM,  marschm...@stud.uni-heidelberg.de wrote:
 Dear Utkarsh,

 I changed the Result Array names to sigmaXX etc but still get the same error
 message.
 I think the problem is with the product between the two unit vectors.
 Simply calculating for example  iHat*iHat  yields the same error message.

 Would you know in general how to form a tensor field in paraview from its
 components?


 Thanks,
 Gianna









 Quoting Utkarsh Ayachit utkarsh.ayac...@kitware.com:

 Gianna,

 For Calculator filter,  names with _X, _Y have special meaning.
 Try change Calulators 1-9 to use Result Array names as sigmaXX,
 sigmaYY, etc.
 Does that work?

 Utkarsh

 On Mon, Oct 6, 2014 at 6:31 PM,  marschm...@stud.uni-heidelberg.de
 wrote:

 Hello Utkarsh,
 thanks for looking at it.
 Attached is the state file:
 - Calculators 1-6 calculate the 6 independent components of the symmetric
 stress tensor sigma_ij

 - Calculators 7-9 calculate the traction vectors s_i from the stress
 components (s_i = sigma_ij e_j , summation over j implied, e_j basis
 vectors)

 Now in another calculator I'd like to compute the stress tensor field,
 either directly from the stress components sigma_ij or from the traction
 vectors. Both approaches fail with the error message.
 The stress tensor is given by
 sigma =

 sigma_xx(e_x*e_x)+sigma_yy(e_y*e_y)+sigma_zz(e_z*_ez)+sigma_xy)(e_xe_y+e_ye_x)+sigma_xz(e_xe_z+e_ze_x)+sigma_yz(e_ye_z+e_ze_y)
 equivalent to
 sigma = s_x*e_x + s_y*e_y +s_z*e_z

 Thanks,
 Gianna



 Quoting Utkarsh Ayachit utkarsh.ayac...@kitware.com:

 Can you attach a sample data file/state file? That'll make it easier
 to identify the problem and suggest a solution.

 Thanks
 Utkarsh

 On Sat, Oct 4, 2014 at 4:14 AM,  marschm...@stud.uni-heidelberg.de
 wrote:


 Hello everyone,

 I have three displacement field vector components u, v, w in my .vtk
 file
 and wish to display the associated stress tensor.
 I made the following steps:

 - Apply the filter Gradient Of Unstructued DataSet
 - Now have 9 scalars Gradient_0, ... , Gradient 8

 - compute components of stress tensor via sigma_ij = div(Gradient) +
 u_i,j
 - Now have additional 9 scalars sigma_ij

 - from this form traction vectors:
 T_i = sigma_ij e_j   ,where e_j are the unit vectors iHat

 - Now have three traction vectors from which the tensor field
 computation
 doesnt work:

 - I do Result = T_1*iHat + T_2*jHat + T_3*kHat for the tensor
 calculation
 and get the following error message:

 ERROR: In


 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
 line 201
 vtkFunctionParser (0x205ddac0): Parse: Error deciding between ambiguous
 operators


 ERROR: In


 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
 line 300
 vtkFunctionParser (0x205ddac0): expecting either 2 scalars or a scalar
 and a
 vector


 ERROR: In


 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
 line 201
 vtkFunctionParser (0x205ddac0): Parse: Error deciding between ambiguous
 operators


 - Can you help me or tell me gow to visualize the stress tensor from
 the
 displacement field?
 - Alternatively you it would also be good to know how to multiply the
 result
 of  filter Gradient of Unstructured DataSet by a scalar value.


 Many thanks for helping!
 Gianna

 ___
 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://public.kitware.com/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://public.kitware.com/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:

Re: [Paraview] calculator tensor field

[Utkarsh Ayachit]

Can you attach a sample data file/state file? That'll make it easier
to identify the problem and suggest a solution.

Thanks
Utkarsh

On Sat, Oct 4, 2014 at 4:14 AM,  marschm...@stud.uni-heidelberg.de wrote:
 Hello everyone,

 I have three displacement field vector components u, v, w in my .vtk file
 and wish to display the associated stress tensor.
 I made the following steps:

 - Apply the filter Gradient Of Unstructued DataSet
 - Now have 9 scalars Gradient_0, ... , Gradient 8

 - compute components of stress tensor via sigma_ij = div(Gradient) + u_i,j
 - Now have additional 9 scalars sigma_ij

 - from this form traction vectors:
 T_i = sigma_ij e_j   ,where e_j are the unit vectors iHat

 - Now have three traction vectors from which the tensor field computation
 doesnt work:

 - I do Result = T_1*iHat + T_2*jHat + T_3*kHat for the tensor calculation
 and get the following error message:

 ERROR: In
 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
 line 201
 vtkFunctionParser (0x205ddac0): Parse: Error deciding between ambiguous
 operators


 ERROR: In
 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
 line 300
 vtkFunctionParser (0x205ddac0): expecting either 2 scalars or a scalar and a
 vector


 ERROR: In
 /home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx,
 line 201
 vtkFunctionParser (0x205ddac0): Parse: Error deciding between ambiguous
 operators


 - Can you help me or tell me gow to visualize the stress tensor from the
 displacement field?
 - Alternatively you it would also be good to know how to multiply the result
 of  filter Gradient of Unstructured DataSet by a scalar value.


 Many thanks for helping!
 Gianna

 ___
 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://public.kitware.com/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://public.kitware.com/mailman/listinfo/paraview

[Paraview] calculator tensor field

[Marschmann]

Hello everyone,

I have three displacement field vector components u, v, w in my .vtk file
and wish to display the associated stress tensor.
I made the following steps:

- Apply the filter Gradient Of Unstructued DataSet
- Now have 9 scalars Gradient_0, ... , Gradient 8

- compute components of stress tensor via sigma_ij = div(Gradient) + u_i,j
- Now have additional 9 scalars sigma_ij

- from this form traction vectors:
T_i = sigma_ij e_j   ,where e_j are the unit vectors iHat

- Now have three traction vectors from which the tensor field  
computation doesnt work:


- I do Result = T_1*iHat + T_2*jHat + T_3*kHat for the tensor  
calculation and get the following error message:


ERROR: In  
/home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx, line  
201
vtkFunctionParser (0x205ddac0): Parse: Error deciding between  
ambiguous operators



ERROR: In  
/home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx, line  
300
vtkFunctionParser (0x205ddac0): expecting either 2 scalars or a scalar  
and a vector



ERROR: In  
/home/abuild/rpmbuild/BUILD/ParaView-v4.0.1-source/VTK/Common/Misc/vtkFunctionParser.cxx, line  
201
vtkFunctionParser (0x205ddac0): Parse: Error deciding between  
ambiguous operators



- Can you help me or tell me gow to visualize the stress tensor from  
the displacement field?
- Alternatively you it would also be good to know how to multiply the  
result of  filter Gradient of Unstructured DataSet by a scalar value.



Many thanks for helping!
Gianna

___
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://public.kitware.com/mailman/listinfo/paraview

[Paraview] Calculator Filter Troubleshooting - Bug Report

[Etienne Gibaud]

Hello,

My colleagues and I use ParaView at work, we think we have been meeting 
a bug in the Calculator filter.
We use ParaView 3.14.1 (32  64-bit). The bug seems to happen on 3 
different machines.


Here are steps that can reproduce this bug :

- Load an *.sol.xmf solution (with multiple solutions *.solxx.xmf).
- Use the Calculator Filter to compute some quantity.
- Change the number of the solution, the calculator value is updated to 
compute the quantity on the new solution.

- Use a new Calculator to compute this same quantity.

We can see that the results from the two calculators are different.
If you need some additional details or files, i will follow your 
instructions.


Thank you,

E. Gibaud
Université Montpellier 2
Montpellier, France.
___
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] Calculator disabled when no point or cell data exists in ParaView 3.98.0

[Utkarsh Ayachit]

That makes sense. I've pushed a fix
(http://paraview.org/Bug/view.php?id=13824). Patch attached.

Utkarsh

On Thu, Jan 24, 2013 at 4:47 PM, Cory Quammen cquam...@cs.unc.edu wrote:
 In ParaView 3.14.1, I used to be able to create quick test data sets
 by using the Point Source and applying the Calculator filter to it to
 generate some point data using the coordinates of the points in the
 point source.

 This is no longer possible in 3.98.0. Is that by design? I'd argue
 that the calculator should be available in this case. A perhaps more
 common use case would be using the Calculator to perform a
 transformation on point coordinates in an object.

 Thanks,
 Cory

 --
 Cory Quammen
 Research Associate
 Department of Computer Science
 The University of North Carolina at Chapel Hill
 ___
 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


0001-BUG-13824.-Calculator-can-now-work-when-cell-point-a.patch
Description: Binary data
___
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] Calculator disabled when no point or cell data exists in ParaView 3.98.0

[Cory Quammen]

Thanks, Utkarsh!

Cory

On Fri, Jan 25, 2013 at 1:09 PM, Utkarsh Ayachit
utkarsh.ayac...@kitware.com wrote:
 That makes sense. I've pushed a fix
 (http://paraview.org/Bug/view.php?id=13824). Patch attached.

 Utkarsh

 On Thu, Jan 24, 2013 at 4:47 PM, Cory Quammen cquam...@cs.unc.edu wrote:
 In ParaView 3.14.1, I used to be able to create quick test data sets
 by using the Point Source and applying the Calculator filter to it to
 generate some point data using the coordinates of the points in the
 point source.

 This is no longer possible in 3.98.0. Is that by design? I'd argue
 that the calculator should be available in this case. A perhaps more
 common use case would be using the Calculator to perform a
 transformation on point coordinates in an object.

 Thanks,
 Cory

 --
 Cory Quammen
 Research Associate
 Department of Computer Science
 The University of North Carolina at Chapel Hill
 ___
 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



-- 
Cory Quammen
Research Associate
Department of Computer Science
The University of North Carolina at Chapel Hill
___
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

[Paraview] Calculator disabled when no point or cell data exists in ParaView 3.98.0

[Cory Quammen]

In ParaView 3.14.1, I used to be able to create quick test data sets
by using the Point Source and applying the Calculator filter to it to
generate some point data using the coordinates of the points in the
point source.

This is no longer possible in 3.98.0. Is that by design? I'd argue
that the calculator should be available in this case. A perhaps more
common use case would be using the Calculator to perform a
transformation on point coordinates in an object.

Thanks,
Cory

--
Cory Quammen
Research Associate
Department of Computer Science
The University of North Carolina at Chapel Hill
___
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

[Paraview] calculator

[Whitehead, Jared]

I know this should be very simple, but it certainly doesn't appear to be.

I have to different sets of .vtk files each one representing different 
variables.  All that I want to do is see the instantaneous correlation between 
the variables, i.e. I want to multiply them together.  Unfortunately I can't 
figure out how to specify data from different files in the calculator.  When I 
group the datasets, there is nothing that indicates what the name of the 
variables are...I'm guessing that would be helpful.

 -Jared

CCS2/CNLS Postdoctoral Research Associate
Los Alamos National Laboratory
___
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] calculator

[Utkarsh Ayachit]

Take a look at this:
http://paraview.org/Wiki/ParaView/Users_Guide/Python_Calculator#Comparing_Multiple_Datasets

You can use similar approach to other arithmetic besides difference.

Utkarsh

On Tue, May 29, 2012 at 5:04 PM, Whitehead, Jared whiteh...@lanl.gov wrote:
 I know this should be very simple, but it certainly doesn't appear to be.

 I have to different sets of .vtk files each one representing different
 variables.  All that I want to do is see the instantaneous correlation
 between the variables, i.e. I want to multiply them together.  Unfortunately
 I can't figure out how to specify data from different files in the
 calculator.  When I group the datasets, there is nothing that indicates what
 the name of the variables are...I'm guessing that would be helpful.

  -Jared

 CCS2/CNLS Postdoctoral Research Associate
 Los Alamos National Laboratory

 ___
 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] calculator gives incorrect results for multiblock datasets

[Sebastien Jourdain]

Hi Paul,

I add a bug entry for that here
http://www.paraview.org/Bug/view.php?id=13088 as I didn't manage to look
into it this week...

Seb

On Mon, Feb 13, 2012 at 9:34 AM, Edwards, Paul 
paul.edwar...@rolls-royce.com wrote:

 Hi,

 ** **

 The calculator gives incorrect results for multiblock unless the variables
 have the same index internally.  This can be reproduced with the steps
 below:

 ** **

 **1.   **Create a python source that outputs vtkUnstructuredGrid with
 the following script:

 def add_scalar(ds, val):

 arr = vtk.vtkDoubleArray()

 arr.SetName(Scalar+str(val))

 arr.SetNumberOfComponents(1)

 arr.SetNumberOfTuples(8)

 for i in range(8):

 arr.SetTuple1(i, float(val))

 output.GetPointData().AddArray(arr)

 ** **

 output = self.GetOutput()

 npts = 8

 pts = vtk.vtkPoints()

 pts.InsertNextPoint(-3.0, -1.0, -1.0)

 pts.InsertNextPoint(-1.0, -1.0, -1.0)

 pts.InsertNextPoint(-1.0,  1.0, -1.0)

 pts.InsertNextPoint(-3.0,  1.0, -1.0)

 pts.InsertNextPoint(-3.0, -1.0,  1.0)

 pts.InsertNextPoint(-1.0, -1.0,  1.0)

 pts.InsertNextPoint(-1.0,  1.0,  1.0)

 pts.InsertNextPoint(-3.0,  1.0,  1.0)

 output.SetPoints(pts)

 output.Allocate(1,1)

 ids = vtk.vtkIdList()

 for i in range(npts):

 ids.InsertId(i,i)

 add_scalar(output, 1)

 add_scalar(output, 2)

 output.InsertNextCell(vtk.VTK_HEXAHEDRON, ids)

 **2.   **Create a second python source that outputs
 vtkUnstructuredGrid with the following script (notice the change in order
 when adding the scalars):

 def add_scalar(ds, val):

 arr = vtk.vtkDoubleArray()

 arr.SetName(Scalar+str(val))

 arr.SetNumberOfComponents(1)

 arr.SetNumberOfTuples(8)

 for i in range(8):

 arr.SetTuple1(i, float(val))

 output.GetPointData().AddArray(arr)

 ** **

 output = self.GetOutput()

 npts = 8

 pts = vtk.vtkPoints()

 pts.InsertNextPoint(-3.0, -1.0, -1.0)

 pts.InsertNextPoint(-1.0, -1.0, -1.0)

 pts.InsertNextPoint(-1.0,  1.0, -1.0)

 pts.InsertNextPoint(-3.0,  1.0, -1.0)

 pts.InsertNextPoint(-3.0, -1.0,  1.0)

 pts.InsertNextPoint(-1.0, -1.0,  1.0)

 pts.InsertNextPoint(-1.0,  1.0,  1.0)

 pts.InsertNextPoint(-3.0,  1.0,  1.0)

 output.SetPoints(pts)

 output.Allocate(1,1)

 ids = vtk.vtkIdList()

 for i in range(npts):

 ids.InsertId(i,i) 

 add_scalar(output, 2)

 add_scalar(output, 1)

 output.InsertNextCell(vtk.VTK_HEXAHEDRON, ids)

 **3.   **Group the two python sources together

 **4.   **Use the Calculator filter to pass through Scalar1

 ** **

 See output below:

 ** **

 

 ** **

 Regards,

 Paul

 The data contained in, or attached to, this e-mail, may contain confidential 
 information. If you have received it in error you should notify the sender 
 immediately by reply e-mail, delete the message from your system and contact 
 +44 (0) 1332 242424 (the Rolls-Royce IT Security Director) if you need 
 assistance. Please do not copy it for any purpose, or disclose its contents 
 to any other person.

 An e-mail response to this address may be subject to interception or 
 monitoring for operational reasons or for lawful business practices.

 (c) 2012 Rolls-Royce plc

 Registered office: 65 Buckingham Gate, London SW1E 6AT Company number: 
 1003142. Registered in England.


 ___
 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


image001.png___
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

[Paraview] Calculator removes cell data

[Fabian, Nathan]

Hi,

I just submitted a bug on this: http://paraview.org/Bug/view.php?id=12944

But I'm wondering if there's a way to work around it.  The problem is that
I'm trying to modify the coordinates insitu using the displacement, but
that ends up deleting the cell data.  Is there any way to merge the cell
data from one data source into the another?

Something like this:

InputData = InputData() #get the input data from coprocessing

Calculator = Calculator () #removes the cell data

Merged = CopyCellDataFromAtoB (InputData, Calculator) #copies the cell
data from InputData, but uses modified mesh from Calculator

Thanks,
Nathan.


___
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

[Paraview] calculator gives incorrect results for multiblock datasets

[Edwards, Paul]

Hi,

 

The calculator gives incorrect results for multiblock unless the
variables have the same index internally.  This can be reproduced with
the steps below:

 

1.   Create a python source that outputs vtkUnstructuredGrid with
the following script:

def add_scalar(ds, val):

arr = vtk.vtkDoubleArray()

arr.SetName(Scalar+str(val))

arr.SetNumberOfComponents(1)

arr.SetNumberOfTuples(8)

for i in range(8):

arr.SetTuple1(i, float(val))

output.GetPointData().AddArray(arr)

 

output = self.GetOutput()

npts = 8

pts = vtk.vtkPoints()

pts.InsertNextPoint(-3.0, -1.0, -1.0)

pts.InsertNextPoint(-1.0, -1.0, -1.0)

pts.InsertNextPoint(-1.0,  1.0, -1.0)

pts.InsertNextPoint(-3.0,  1.0, -1.0)

pts.InsertNextPoint(-3.0, -1.0,  1.0)

pts.InsertNextPoint(-1.0, -1.0,  1.0)

pts.InsertNextPoint(-1.0,  1.0,  1.0)

pts.InsertNextPoint(-3.0,  1.0,  1.0)

output.SetPoints(pts)

output.Allocate(1,1)

ids = vtk.vtkIdList()

for i in range(npts):

ids.InsertId(i,i)

add_scalar(output, 1)

add_scalar(output, 2)

output.InsertNextCell(vtk.VTK_HEXAHEDRON, ids)

2.   Create a second python source that outputs vtkUnstructuredGrid
with the following script (notice the change in order when adding the
scalars):

def add_scalar(ds, val):

arr = vtk.vtkDoubleArray()

arr.SetName(Scalar+str(val))

arr.SetNumberOfComponents(1)

arr.SetNumberOfTuples(8)

for i in range(8):

arr.SetTuple1(i, float(val))

output.GetPointData().AddArray(arr)

 

output = self.GetOutput()

npts = 8

pts = vtk.vtkPoints()

pts.InsertNextPoint(-3.0, -1.0, -1.0)

pts.InsertNextPoint(-1.0, -1.0, -1.0)

pts.InsertNextPoint(-1.0,  1.0, -1.0)

pts.InsertNextPoint(-3.0,  1.0, -1.0)

pts.InsertNextPoint(-3.0, -1.0,  1.0)

pts.InsertNextPoint(-1.0, -1.0,  1.0)

pts.InsertNextPoint(-1.0,  1.0,  1.0)

pts.InsertNextPoint(-3.0,  1.0,  1.0)

output.SetPoints(pts)

output.Allocate(1,1)

ids = vtk.vtkIdList()

for i in range(npts):

ids.InsertId(i,i) 

add_scalar(output, 2)

add_scalar(output, 1)

output.InsertNextCell(vtk.VTK_HEXAHEDRON, ids)

3.   Group the two python sources together

4.   Use the Calculator filter to pass through Scalar1

 

See output below:

 

 

 

Regards,

Paul


The data contained in, or attached to, this e-mail, may contain confidential 
information. If you have received it in error you should notify the sender 
immediately by reply e-mail, delete the message from your system and contact 
+44 (0) 1332 242424 (the Rolls-Royce IT Security Director) if you need 
assistance. Please do not copy it for any purpose, or disclose its contents to 
any other person.

An e-mail response to this address may be subject to interception or monitoring 
for operational reasons or for lawful business practices.

(c) 2012 Rolls-Royce plc

Registered office: 65 Buckingham Gate, London SW1E 6AT Company number: 1003142. 
Registered in England. 
image001.png___
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

[Paraview] Calculator filter doesn't see a PointData vector

[David Doria]

I have a data set that has a 308D vector associated with the PointData:

descriptors-SetNumberOfComponents(308);
descriptors-SetName(Descriptors);
descriptors-SetNumberOfTuples(polyData-GetNumberOfPoints());
...
polyData-GetPointData()-AddArray(descriptors);

I want to apply a Calculator filter to filter the points by their
descriptor magnitude. In the Calculator filter, I choose

Attribute mode: PointData

Then if I click the Vectors drop down box, I see two other vectors
(colors and coords), but not Descriptors. If I click on the
Scalars drop down box, I see 308 entries for a single dimension of
the descriptor vector with their index appended after an underscore
(ie. Descriptors_0 ...Descriptors_307), but not the whole vector. Is
there a way to apply a norm(Descriptors) operation in the Calculator
filter with this data set?

Thanks,

David
___
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] Calculator filter doesn't see a PointData vector

[David Doria]

On Mon, Jan 30, 2012 at 1:59 PM, David Doria daviddo...@gmail.com wrote:
 I have a data set that has a 308D vector associated with the PointData:

 descriptors-SetNumberOfComponents(308);
 descriptors-SetName(Descriptors);
 descriptors-SetNumberOfTuples(polyData-GetNumberOfPoints());
 ...
 polyData-GetPointData()-AddArray(descriptors);

 I want to apply a Calculator filter to filter the points by their
 descriptor magnitude. In the Calculator filter, I choose

 Attribute mode: PointData

 Then if I click the Vectors drop down box, I see two other vectors
 (colors and coords), but not Descriptors. If I click on the
 Scalars drop down box, I see 308 entries for a single dimension of
 the descriptor vector with their index appended after an underscore
 (ie. Descriptors_0 ...Descriptors_307), but not the whole vector. Is
 there a way to apply a norm(Descriptors) operation in the Calculator
 filter with this data set?

I found the Auto Convert Properties which lets me threshold the magnitudes
directly in the Threshold filter (this is nice!). However, it still seems
like you should be able to use the magnitude in a calculator filter.
___
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] calculator filter - invalid array name

[Aurélien Marsan]

It seems that you're using wrong names.

The name of the only data that you can use in the formulas are available
under the buttons scalars and vectors in the calculator filter.
If you don't see anything, no variables is stored at the points of your
dataset.

You can see the data stored at the center of cells by into the information
tab.

2010/10/26 Jean-Baptiste Leydet jean-baptiste_ley...@whirlpool.com

 Hey all,

 I'm experiencing issues with the calculator filter. Basically I'm trying to
 create local_entropy_generation_rate=F(turbulent_viscosity
 ,space_derivatives_of_velocity_components) and I keep getting some kind of
 error in vtkArrayCalculator.cxx, line 305, like  Invalid array name:
 VectorGradient or Invalid array name: TurbVisc.

 I tried messing around with the cell-to-point or point-to-cell data filters
 but it did not help. My initial input is one single CFD dataset created by
 Code_Saturne. I can display the turbulent viscosity and the derivatives of
 the velocity field as I wish, but I don't manage to use the array data to
 create my entropy function...

 Any clue?

 Thanks!
 JB

 ___
 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

[Paraview] calculator filter - invalid array name

[Jean-Baptiste Leydet]

Hey all,
I'm experiencing issues with the calculator filter. Basically I'm trying 
to create local_entropy_generation_rate=F(turbulent_viscosity 
,space_derivatives_of_velocity_components) and I keep getting some kind of 
error in vtkArrayCalculator.cxx, line 305, like  Invalid array name: 
VectorGradient or Invalid array name: TurbVisc.

I tried messing around with the cell-to-point or point-to-cell data 
filters but it did not help. My initial input is one single CFD dataset 
created by Code_Saturne. I can display the turbulent viscosity and the 
derivatives of the velocity field as I wish, but I don't manage to use the 
array data to create my entropy function...

Any clue?

Thanks!
JB___
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] Calculator Filter -- Gradient

[Berk Geveci]

I am not sure that I understand. Are Q1 and Q2 vectors? Are you trying
to divide the component by component?

2010/9/13 Aurélien Marsan aur.mar...@gmail.com:
 Hello,

 In order to calculate a new scalar (here for a multiblockdataset)

 pdi = self.GetInput()

 pdo = self.GetOutput()

 pdo.ShallowCopy(pdi)

 for block in output[0]:

 if block.GetNumberOfPoints() != 0:

 array = block.PointData['Q1'] / block.PointData['Q2']

 block.PointData.append(array, 'newQ')

 For a new vector, I would like someone to explain a simple way to do that.
 (without many transpose, ravel, etc...)
 Knowing that it does not work with array =
 numpy.array([block.PointData['Q1'], block.PointData['Q2'],
 block.PointData['Q3']]) / block.PointData['Q4']
 because of a problem of dimensions.

 Regards,

 A.Marsan

 2010/9/10 dpar...@chromalloy.com

 I have a couple of questions about using the Programmable Filter. I have
 imported Tecplot dataset with the following data: coordsX, coordsY, coordsZ,
 Q1, Q2, Q3, Q4, Q5.

 How would I create a new data array that is Q2^2+Q3^2+Q4^2?

 How would I create a new vector data array (similar to
 Q2*iHat+Q3*jHat+Q4*kHat in the Calculator Filter)?




 From:        David E DeMarle dave.dema...@kitware.com
 To:        dpar...@chromalloy.com
 Cc:        parav...@paraview.org
 Date:        09/10/2010 01:24 PM
 Subject:        Re: [Paraview] Calculator Filter -- Gradient
 Sent by:        paraview-boun...@paraview.org
 


 On Fri, Sep 10, 2010 at 1:10 PM,  dpar...@chromalloy.com wrote:
  I have two somewhat related questions:
 
  1. Is it possible to calculate a gradient vector using the calculator
  filter?

 No. The calculator filter does only element wise (cell by cell or
 point by point) computations. To compute the gradient you need
 information from neighboring elements.

 
  2. Is it possible to define a new data array using a Python script
  without
  the calculator filter? Currently, I am using several Calculator Filters
  to
  calculate CFD flow variables from the conservative variables. I use a
  Python
  script to create the Calculator Filters, but I'm wondering if I can
  avoid
  the Calculator Filter and directly generate new data arrays for
  plotting.
 

 Not with a python script (under the python shell) since that runs on
 the client and can't really manipulate the data (which lives on the
 server) directly. However, the python programmable filter runs on the
 server, and with that you can create new arrays, and access
 neighboring elements as well.
 See http://www.paraview.org/Wiki/Python_Programmable_Filter for examples.

  David Parker
  ___
  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


 ___
 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


___
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] Calculator Filter -- Gradient

[Aurélien Marsan]

That's it.
In the Calculator, I would set the formula : Q1/Q4*iHat + Q2/Q4*jHat +
Q3/Q4*kHat.

In the programmable filter, there is some facilities in order to use numpy
arrays. But what should be the dimensions of the numpy array if we want to
add a vector by doing something like block.PointData.append(array, 'newQ')
?


Le 14 septembre 2010 17:15, Berk Geveci berk.gev...@kitware.com a écrit :

 I am not sure that I understand. Are Q1 and Q2 vectors? Are you trying
 to divide the component by component?

 2010/9/13 Aurélien Marsan aur.mar...@gmail.com:
  Hello,
 
  In order to calculate a new scalar (here for a multiblockdataset)
 
  pdi = self.GetInput()
 
  pdo = self.GetOutput()
 
  pdo.ShallowCopy(pdi)
 
  for block in output[0]:
 
  if block.GetNumberOfPoints() != 0:
 
  array = block.PointData['Q1'] / block.PointData['Q2']
 
  block.PointData.append(array, 'newQ')
 
  For a new vector, I would like someone to explain a simple way to do
 that.
  (without many transpose, ravel, etc...)
  Knowing that it does not work with array =
  numpy.array([block.PointData['Q1'], block.PointData['Q2'],
  block.PointData['Q3']]) / block.PointData['Q4']
  because of a problem of dimensions.
 
  Regards,
 
  A.Marsan
 
  2010/9/10 dpar...@chromalloy.com
 
  I have a couple of questions about using the Programmable Filter. I have
  imported Tecplot dataset with the following data: coordsX, coordsY,
 coordsZ,
  Q1, Q2, Q3, Q4, Q5.
 
  How would I create a new data array that is Q2^2+Q3^2+Q4^2?
 
  How would I create a new vector data array (similar to
  Q2*iHat+Q3*jHat+Q4*kHat in the Calculator Filter)?
 
 
 
 
  From:David E DeMarle dave.dema...@kitware.com
  To:dpar...@chromalloy.com
  Cc:paraview@paraview.org
  Date:09/10/2010 01:24 PM
  Subject:Re: [Paraview] Calculator Filter -- Gradient
  Sent by:paraview-boun...@paraview.org
  
 
 
  On Fri, Sep 10, 2010 at 1:10 PM,  dpar...@chromalloy.com wrote:
   I have two somewhat related questions:
  
   1. Is it possible to calculate a gradient vector using the calculator
   filter?
 
  No. The calculator filter does only element wise (cell by cell or
  point by point) computations. To compute the gradient you need
  information from neighboring elements.
 
  
   2. Is it possible to define a new data array using a Python script
   without
   the calculator filter? Currently, I am using several Calculator
 Filters
   to
   calculate CFD flow variables from the conservative variables. I use a
   Python
   script to create the Calculator Filters, but I'm wondering if I can
   avoid
   the Calculator Filter and directly generate new data arrays for
   plotting.
  
 
  Not with a python script (under the python shell) since that runs on
  the client and can't really manipulate the data (which lives on the
  server) directly. However, the python programmable filter runs on the
  server, and with that you can create new arrays, and access
  neighboring elements as well.
  See http://www.paraview.org/Wiki/Python_Programmable_Filter for
 examples.
 
   David Parker
   ___
   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
 
 
  ___
  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
 
 

___
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

Re: [Paraview] Calculator Filter -- Gradient

[Aurélien Marsan]

Hello,

In order to calculate a new scalar (here for a multiblockdataset)

pdi = self.GetInput()

pdo = self.GetOutput()

pdo.ShallowCopy(pdi)

for block in output[0]:

if block.GetNumberOfPoints() != 0:

array = block.PointData['Q1'] / block.PointData['Q2']

block.PointData.append(array, 'newQ')


For a new vector, I would like someone to explain a simple way to do that.
(without many transpose, ravel, etc...)
Knowing that it does not work with array =
numpy.array([block.PointData['Q1'], block.PointData['Q2'],
block.PointData['Q3']]) / block.PointData['Q4']
because of a problem of dimensions.

Regards,

A.Marsan

2010/9/10 dpar...@chromalloy.com

 I have a couple of questions about using the Programmable Filter. I have
 imported Tecplot dataset with the following data: coordsX, coordsY, coordsZ,
 Q1, Q2, Q3, Q4, Q5.

 How would I create a new data array that is Q2^2+Q3^2+Q4^2?

 How would I create a new vector data array (similar to
 Q2*iHat+Q3*jHat+Q4*kHat in the Calculator Filter)?




 From:David E DeMarle dave.dema...@kitware.com
 To:dpar...@chromalloy.com
 Cc:paraview@paraview.org
 Date:09/10/2010 01:24 PM
 Subject:Re: [Paraview] Calculator Filter -- Gradient
 Sent by:paraview-boun...@paraview.org
 --



 On Fri, Sep 10, 2010 at 1:10 PM,  dpar...@chromalloy.com wrote:
  I have two somewhat related questions:
 
  1. Is it possible to calculate a gradient vector using the calculator
  filter?

 No. The calculator filter does only element wise (cell by cell or
 point by point) computations. To compute the gradient you need
 information from neighboring elements.

 
  2. Is it possible to define a new data array using a Python script
 without
  the calculator filter? Currently, I am using several Calculator Filters
 to
  calculate CFD flow variables from the conservative variables. I use a
 Python
  script to create the Calculator Filters, but I'm wondering if I can avoid
  the Calculator Filter and directly generate new data arrays for plotting.
 

 Not with a python script (under the python shell) since that runs on
 the client and can't really manipulate the data (which lives on the
 server) directly. However, the python programmable filter runs on the
 server, and with that you can create new arrays, and access
 neighboring elements as well.
 See http://www.paraview.org/Wiki/Python_Programmable_Filter for examples.

  David Parker
  ___
  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


 ___
 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

[Paraview] Calculator Filter -- Gradient

[DParker]

I have two somewhat related questions:

1. Is it possible to calculate a gradient vector using the calculator 
filter?

2. Is it possible to define a new data array using a Python script without 
the calculator filter? Currently, I am using several Calculator Filters to 
calculate CFD flow variables from the conservative variables. I use a 
Python script to create the Calculator Filters, but I'm wondering if I can 
avoid the Calculator Filter and directly generate new data arrays for 
plotting. 

David Parker___
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] Calculator Filter -- Gradient

[David E DeMarle]

On Fri, Sep 10, 2010 at 1:10 PM,  dpar...@chromalloy.com wrote:
 I have two somewhat related questions:

 1. Is it possible to calculate a gradient vector using the calculator
 filter?

No. The calculator filter does only element wise (cell by cell or
point by point) computations. To compute the gradient you need
information from neighboring elements.


 2. Is it possible to define a new data array using a Python script without
 the calculator filter? Currently, I am using several Calculator Filters to
 calculate CFD flow variables from the conservative variables. I use a Python
 script to create the Calculator Filters, but I'm wondering if I can avoid
 the Calculator Filter and directly generate new data arrays for plotting.


Not with a python script (under the python shell) since that runs on
the client and can't really manipulate the data (which lives on the
server) directly. However, the python programmable filter runs on the
server, and with that you can create new arrays, and access
neighboring elements as well.
See http://www.paraview.org/Wiki/Python_Programmable_Filter for examples.

 David Parker
 ___
 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] Calculator Filter -- Gradient

[DParker]

I have a couple of questions about using the Programmable Filter. I have 
imported Tecplot dataset with the following data: coordsX, coordsY, 
coordsZ, Q1, Q2, Q3, Q4, Q5. 

How would I create a new data array that is Q2^2+Q3^2+Q4^2? 

How would I create a new vector data array (similar to 
Q2*iHat+Q3*jHat+Q4*kHat in the Calculator Filter)?




From:   David E DeMarle dave.dema...@kitware.com
To: dpar...@chromalloy.com
Cc: paraview@paraview.org
Date:   09/10/2010 01:24 PM
Subject:Re: [Paraview] Calculator Filter -- Gradient
Sent by:paraview-boun...@paraview.org



On Fri, Sep 10, 2010 at 1:10 PM,  dpar...@chromalloy.com wrote:
 I have two somewhat related questions:

 1. Is it possible to calculate a gradient vector using the calculator
 filter?

No. The calculator filter does only element wise (cell by cell or
point by point) computations. To compute the gradient you need
information from neighboring elements.


 2. Is it possible to define a new data array using a Python script 
without
 the calculator filter? Currently, I am using several Calculator Filters 
to
 calculate CFD flow variables from the conservative variables. I use a 
Python
 script to create the Calculator Filters, but I'm wondering if I can 
avoid
 the Calculator Filter and directly generate new data arrays for 
plotting.


Not with a python script (under the python shell) since that runs on
the client and can't really manipulate the data (which lives on the
server) directly. However, the python programmable filter runs on the
server, and with that you can create new arrays, and access
neighboring elements as well.
See http://www.paraview.org/Wiki/Python_Programmable_Filter for examples.

 David Parker
 ___
 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

___
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

[Paraview] Calculator Filter Scripting?

[DParker]

I have several variables that have to be calculated using a series of 
calculator filters. How can I automate the task of setting up the 
calculator filters?

David Parker 
Chromalloy - TDAG
730 SE Indian Street, Stuart, Florida, 34977
561-935-9737 (W)
561-307-2939 (M)___
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] Calculator Filter Scripting?

[Andy Bauer]

You can try creating a customizable filter under Tools or recording a python
trace and then create a macro from it under Tools as well.

Andy

On Wed, Sep 8, 2010 at 5:01 PM, dpar...@chromalloy.com wrote:

 I have several variables that have to be calculated using a series of
 calculator filters. How can I automate the task of setting up the calculator
 filters?

 David Parker
 Chromalloy - TDAG
 730 SE Indian Street, Stuart, Florida, 34977*
 *561-935-9737 (W)
 561-307-2939 (M)
 ___
 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] Calculator Filter Scripting?

[DParker]

Thanks. I really like the Python trace method. 

I tried the Custom Filter but I didn't like the fact that all the 
calculations were hidden and I need the ability to modify some constants. 

The Python script method looks very powerful and the trace functionality 
makes it very easy to get started. 

David Parker 
Chromalloy - TDAG



From:   Andy Bauer andy.ba...@kitware.com
To: dpar...@chromalloy.com
Cc: paraview@paraview.org
Date:   09/08/2010 05:16 PM
Subject:Re: [Paraview] Calculator Filter Scripting?



You can try creating a customizable filter under Tools or recording a 
python trace and then create a macro from it under Tools as well.

Andy

On Wed, Sep 8, 2010 at 5:01 PM, dpar...@chromalloy.com wrote:
I have several variables that have to be calculated using a series of 
calculator filters. How can I automate the task of setting up the 
calculator filters? 

David Parker 
Chromalloy - TDAG 
730 SE Indian Street, Stuart, Florida, 34977
561-935-9737 (W) 
561-307-2939 (M)
___
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] Calculator Filter Scripting?

[Andy Bauer]

Most people seem to like the python scripting stuff over the custom filter.
With macros you can create a GUI button for running the python script as
well.  The custom filter may be able to expose some of the calculator inputs
in the way that you want to in the gui though.  I think the custom filter
can somehow be saved so that you can share it with other people but I'm not
sure how to do that.

On Wed, Sep 8, 2010 at 5:41 PM, dpar...@chromalloy.com wrote:

 Thanks. I really like the Python trace method.

 I tried the Custom Filter but I didn't like the fact that all the
 calculations were hidden and I need the ability to modify some constants.

 The Python script method looks very powerful and the trace functionality
 makes it very easy to get started.

 David Parker
 Chromalloy - TDAG



 From:Andy Bauer andy.ba...@kitware.com
 To:dpar...@chromalloy.com
 Cc:paraview@paraview.org
 Date:09/08/2010 05:16 PM
 Subject:Re: [Paraview] Calculator Filter Scripting?
 --



 You can try creating a customizable filter under Tools or recording a
 python trace and then create a macro from it under Tools as well.

 Andy

 On Wed, Sep 8, 2010 at 5:01 PM, 
 *dpar...@chromalloy.com*dpar...@chromalloy.com
 wrote:
 I have several variables that have to be calculated using a series of
 calculator filters. How can I automate the task of setting up the calculator
 filters?

 David Parker
 Chromalloy - TDAG
 730 SE Indian Street, Stuart, Florida, 34977
 561-935-9737 (W)
 561-307-2939 (M)
 ___
 Powered by *www.kitware.com* http://www.kitware.com/

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

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

 Follow this link to subscribe/unsubscribe:*
 **http://www.paraview.org/mailman/listinfo/paraview*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] Calculator Filter

[Robert Maynard]

Hi Micheal,

You can use the calculator filter to rename variables. Could you also create
a bug report at http://www.paraview.org/Bug/main_page.php.

On Sun, May 23, 2010 at 1:32 PM, Michael Deveau 0980...@acadiau.ca wrote:

 Hi, hopefully you can help me with my issue.

 I'd like to do some calculations involving some vector data, but it keeps
 throwing an error.

 (iHat*abs(2DVEL_X))+(jHat*abs(
 2DVEL_Y))+(kHat*0)

 I think what's happening is that ParaView expects an operator between the 2
 and the D. However, the 2 is part of the variable name. Is there a way to
 tell ParaView this, such as an escape character or a way to enclose the
 variable name?

 I'd like to not have to rename the variables in the file, because I'm not
 in charge of the data. If there is a way I can do that in ParaView, that
 would work as well, I think.

 I've just started using ParaView, so hopefully I'm not missing something
 obvious, but thanks in advance for your help.

 ~ Michael Deveau

 ___
 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




-- 
Robert Maynard
___
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

[Paraview] Calculator performing poorly in ParaView-3-8 branch

[John Patchett]

I've noticed the calculator has started performing substantially
slower in the ParaView-3-8 branch when taking the magnitude of a
vector as compared to the Head before the branch.
I've attached a graph summarizing the performance degradation.  I used
the Mandelbrot source and took the magnitude of the coords vector to
collect data for the graph.
One of my machines averages nearly a 6x slowdown and the other a 4.5x slowdown.

The *-march is a Head build  from 3/23/2010.
3-8 is the branch as of yesterday afternoon.

I (believe) the change that affected the calculator performance
happened after the branch as I noticed it after I updated the branch (
I wouldn't bet too much on this though)...  I don't know if the Head
is affected.

Thanks,
--John Patchett.


calculator.eps
Description: PostScript document
___
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] Calculator performing poorly in ParaView-3-8 branch

[Utkarsh Ayachit]

John,

Attached is a patch. Can you verify that it overcomes the performance
issues you are seeing? If so, I'll commit it to CVS and get in 3.8
branch as well.

Utkarsh

On Tue, Apr 13, 2010 at 3:23 PM, John Patchett patchett2...@gmail.com wrote:
 I've noticed the calculator has started performing substantially
 slower in the ParaView-3-8 branch when taking the magnitude of a
 vector as compared to the Head before the branch.
 I've attached a graph summarizing the performance degradation.  I used
 the Mandelbrot source and took the magnitude of the coords vector to
 collect data for the graph.
 One of my machines averages nearly a 6x slowdown and the other a 4.5x 
 slowdown.

 The *-march is a Head build  from 3/23/2010.
 3-8 is the branch as of yesterday afternoon.

 I (believe) the change that affected the calculator performance
 happened after the branch as I noticed it after I updated the branch (
 I wouldn't bet too much on this though)...  I don't know if the Head
 is affected.

 Thanks,
 --John Patchett.

 ___
 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




CalculatorPerformanceBug.patch
Description: Binary data
___
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] Calculator performing poorly in ParaView-3-8 branch

[John Patchett]

Initial results show performance is repaired, on par with the March
Head build...
Thank You very much,
--John.

On Tue, Apr 13, 2010 at 2:20 PM, Utkarsh Ayachit
utkarsh.ayac...@kitware.com wrote:
 John,

 Attached is a patch. Can you verify that it overcomes the performance
 issues you are seeing? If so, I'll commit it to CVS and get in 3.8
 branch as well.

 Utkarsh

 On Tue, Apr 13, 2010 at 3:23 PM, John Patchett patchett2...@gmail.com wrote:
 I've noticed the calculator has started performing substantially
 slower in the ParaView-3-8 branch when taking the magnitude of a
 vector as compared to the Head before the branch.
 I've attached a graph summarizing the performance degradation.  I used
 the Mandelbrot source and took the magnitude of the coords vector to
 collect data for the graph.
 One of my machines averages nearly a 6x slowdown and the other a 4.5x 
 slowdown.

 The *-march is a Head build  from 3/23/2010.
 3-8 is the branch as of yesterday afternoon.

 I (believe) the change that affected the calculator performance
 happened after the branch as I noticed it after I updated the branch (
 I wouldn't bet too much on this though)...  I don't know if the Head
 is affected.

 Thanks,
 --John Patchett.

 ___
 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] Calculator performing poorly in ParaView-3-8 branch

[Dave Partyka]

Merged onto the branch. Thanks John for reporting this and trying the fix!

/cvsroot/ParaView3/ParaView3/Servers/Filters/vtkPVArrayCalculator.cxx,v  --
 Servers/Filters/vtkPVArrayCalculator.cxx
new revision: 1.2.2.2; previous revision: 1.2.2.1
/cvsroot/ParaView3/ParaView3/VTK/Common/vtkFunctionParser.cxx,v  --
 VTK/Common/vtkFunctionParser.cxx
new revision: 1.45.2.2; previous revision: 1.45.2.1

On Tue, Apr 13, 2010 at 5:51 PM, John Patchett patchett2...@gmail.comwrote:

 Initial results show performance is repaired, on par with the March
 Head build...
 Thank You very much,
 --John.

 On Tue, Apr 13, 2010 at 2:20 PM, Utkarsh Ayachit
 utkarsh.ayac...@kitware.com wrote:
  John,
 
  Attached is a patch. Can you verify that it overcomes the performance
  issues you are seeing? If so, I'll commit it to CVS and get in 3.8
  branch as well.
 
  Utkarsh
 
  On Tue, Apr 13, 2010 at 3:23 PM, John Patchett patchett2...@gmail.com
 wrote:
  I've noticed the calculator has started performing substantially
  slower in the ParaView-3-8 branch when taking the magnitude of a
  vector as compared to the Head before the branch.
  I've attached a graph summarizing the performance degradation.  I used
  the Mandelbrot source and took the magnitude of the coords vector to
  collect data for the graph.
  One of my machines averages nearly a 6x slowdown and the other a 4.5x
 slowdown.
 
  The *-march is a Head build  from 3/23/2010.
  3-8 is the branch as of yesterday afternoon.
 
  I (believe) the change that affected the calculator performance
  happened after the branch as I noticed it after I updated the branch (
  I wouldn't bet too much on this though)...  I don't know if the Head
  is affected.
 
  Thanks,
  --John Patchett.
 
  ___
  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

___
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] Calculator and Python

[Utkarsh Ayachit]

There's seems to be a bug with Calculator panel, that it does not
respect the value set using the python shell.
I've added it to the bug tracker:

http://paraview.org/Bug/view.php?id=10049

Utkarsh

On Fri, Dec 11, 2009 at 11:44 AM, Dominic Jennewein
dominic.jennew...@gmail.com wrote:
 Hello,

 I'm trying to programm the Calculator with the help of Python to automate
 the pipeline.
 Isn't it possible to see the changes in the GUI?
 I tried it like this:

 calc=Calculator()
 calc.Function='Normals.U' #Pointproduct of two Vectors U and Normals
 calc.ResultArrayName='newResult'
 calc.ReplaceInvalidResults=0
 calc.UpdatePipeline()
 Show()

 but in the GUI, it didn't change.
 In the shell the values are changed. (If I press Apply in the GUI, the
 values change back (ok, thats not a bug))

 I think the Calculator Filter isn't really Applyed after that. I don't get
 any result if I'm adding a IntegrateVariablesFilter on this.

 Has somebody the same problems?

 Thank you,

 Dominic




 ___
 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

[Paraview] Calculator and Python

[Dominic Jennewein]

Hello,

I'm trying to programm the Calculator with the help of Python to automate
the pipeline.
Isn't it possible to see the changes in the GUI?
I tried it like this:

calc=Calculator()
calc.Function='Normals.U' #Pointproduct of two Vectors U and Normals
calc.ResultArrayName='newResult'
calc.ReplaceInvalidResults=0
calc.UpdatePipeline()
Show()

but in the GUI, it didn't change.
In the shell the values are changed. (If I press Apply in the GUI, the
values change back (ok, thats not a bug))

I think the Calculator Filter isn't really Applyed after that. I don't get
any result if I'm adding a IntegrateVariablesFilter on this.

Has somebody the same problems?

Thank you,

Dominic
___
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

[Paraview] calculator problem

[Paul Edwards]

Hi,

I've found a bug with the calculator:

create a box
apply calculator filter: array name a, value 1
apply calculator again: array name b, value 2

now change the input for the second calculator to the box and you get
the following error:

vtkArrayCalculator (0x28b3d40): Invalid array name: a

Even though it doesn't use that array...

Regards,
Paul
___
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] calculator problem

[Dominik Szczerba]

The problem is more general.

Create a custom filter using calculator and the data (u,v,w,p) 
sqrt(u^2+v^2+w^2). Save a custom filter. Now re-open the data but now do 
not read 'p' array this time (XDMF). Apply custom filter. Calculator 
will complain p is absent.


Dominik

Utkarsh Ayachit wrote:

Very interesting. I am adding this to the bug tracker.

http://paraview.org/Bug/view.php?id=10012
Thanks for reporting.

Utkarsh

On Tue, Dec 8, 2009 at 9:46 AM, Paul Edwards paul.m.edwa...@gmail.com wrote:

Hi,

I've found a bug with the calculator:

create a box
apply calculator filter: array name a, value 1
apply calculator again: array name b, value 2

now change the input for the second calculator to the box and you get
the following error:

vtkArrayCalculator (0x28b3d40): Invalid array name: a

Even though it doesn't use that array...

Regards,
Paul
___
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



___
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] calculator problem

[Utkarsh Ayachit]

I am not sure why this is a problem? The custom filter will preserve
your equation. So the next time you use the custom filter, it an array
required in the calculator is missing, it should indeed complain.

Utkarsh

On Tue, Dec 8, 2009 at 10:10 AM, Dominik Szczerba domi...@itis.ethz.ch wrote:
 The problem is more general.

 Create a custom filter using calculator and the data (u,v,w,p)
 sqrt(u^2+v^2+w^2). Save a custom filter. Now re-open the data but now do not
 read 'p' array this time (XDMF). Apply custom filter. Calculator will
 complain p is absent.

 Dominik

 Utkarsh Ayachit wrote:

 Very interesting. I am adding this to the bug tracker.

 http://paraview.org/Bug/view.php?id=10012
 Thanks for reporting.

 Utkarsh

 On Tue, Dec 8, 2009 at 9:46 AM, Paul Edwards paul.m.edwa...@gmail.com
 wrote:

 Hi,

 I've found a bug with the calculator:

 create a box
 apply calculator filter: array name a, value 1
 apply calculator again: array name b, value 2

 now change the input for the second calculator to the box and you get
 the following error:

 vtkArrayCalculator (0x28b3d40): Invalid array name: a

 Even though it doesn't use that array...

 Regards,
 Paul
 ___
 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



___
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] calculator problem

[Dominik Szczerba]

Please note that 'p' is not required in the Results formula. Only those 
variables should be required that are needed to form a valid formula, 
not those that were originally present.


Dominik

Utkarsh Ayachit wrote:

I am not sure why this is a problem? The custom filter will preserve
your equation. So the next time you use the custom filter, it an array
required in the calculator is missing, it should indeed complain.

Utkarsh

On Tue, Dec 8, 2009 at 10:10 AM, Dominik Szczerba domi...@itis.ethz.ch wrote:

The problem is more general.

Create a custom filter using calculator and the data (u,v,w,p)
sqrt(u^2+v^2+w^2). Save a custom filter. Now re-open the data but now do not
read 'p' array this time (XDMF). Apply custom filter. Calculator will
complain p is absent.

Dominik

Utkarsh Ayachit wrote:

Very interesting. I am adding this to the bug tracker.

http://paraview.org/Bug/view.php?id=10012
Thanks for reporting.

Utkarsh

On Tue, Dec 8, 2009 at 9:46 AM, Paul Edwards paul.m.edwa...@gmail.com
wrote:

Hi,

I've found a bug with the calculator:

create a box
apply calculator filter: array name a, value 1
apply calculator again: array name b, value 2

now change the input for the second calculator to the box and you get
the following error:

vtkArrayCalculator (0x28b3d40): Invalid array name: a

Even though it doesn't use that array...

Regards,
Paul
___
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







___
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] Calculator question

[Scott, W Alan]

Isn't this bug number 5626?  It should be in version 3.8.

Alan 

 -Original Message-
 From: paraview-boun...@paraview.org 
 [mailto:paraview-boun...@paraview.org] On Behalf Of Berk Geveci
 Sent: Wednesday, September 02, 2009 12:15 PM
 To: Paul Edwards
 Cc: paraview
 Subject: Re: [Paraview] Calculator question
 
 Hmmm. I am afraid not. I think you need to write a custom 
 filter that extracts geometry while assigning a cell variable 
 copied from the field variable. I would also add a feature 
 request for coloring by a field variable. It sounds like a 
 useful feature.
 
 -berk
 
 On Tue, Sep 1, 2009 at 7:20 AM, Paul 
 Edwardspaul.m.edwa...@gmail.com wrote:
  Hi,
 
  Is it possible to use the calculator to get field data that is 
  associated with the whole dataset?  I have a multiblock 
 dataset where 
  each block has a rotational speed associated with it.  I 
 would like to 
  highlight by that value.
 
  Thanks,
  Paul
 
  ___
  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
 
 
___
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] Calculator question

[Berk Geveci]

Hmmm. I am afraid not. I think you need to write a custom filter that
extracts geometry while assigning a cell variable copied from the
field variable. I would also add a feature request for coloring by a
field variable. It sounds like a useful feature.

-berk

On Tue, Sep 1, 2009 at 7:20 AM, Paul Edwardspaul.m.edwa...@gmail.com wrote:
 Hi,

 Is it possible to use the calculator to get field data that is associated
 with the whole dataset?  I have a multiblock dataset where each block has a
 rotational speed associated with it.  I would like to highlight by that
 value.

 Thanks,
 Paul

 ___
 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

[Paraview] Calculator question

[Paul Edwards]

Hi,

Is it possible to use the calculator to get field data that is associated
with the whole dataset?  I have a multiblock dataset where each block has a
rotational speed associated with it.  I would like to highlight by that
value.

Thanks,
Paul
___
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

[Paraview] Calculator filter

[bastil2...@yahoo.de]

Dear all,

after some time with paraview I am quite impressed about its features.
However one thing I am not very happy with remains: I do an ipmort of a
dataset from CFD and afterwards create some slices or clips... Now I
realize there was a variable missing. I calculate it using the
calculator but afterwards the scalar is not available on all allredy
created parts. This means I have to re-create all slices,... using the
calculator filter as an input. I do not think this is very effective.
Are there reasons for this? Any workarounds? Plans to change this?

Regards BastiL
___
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] Calculator filter

[pat marion]

Hi,

Sorry if I am misunderstanding your question... but perhaps the
solution is to use paraviews Change input dialog.  You can right click
an object in the pipeline browser and select Change input...  This
way you can use the calculator as an input to your pre-existing
pipeline.

On Thu, Aug 13, 2009 at 3:01 PM, bastil2...@yahoo.debastil2...@yahoo.de wrote:
 Dear all,

 after some time with paraview I am quite impressed about its features.
 However one thing I am not very happy with remains: I do an ipmort of a
 dataset from CFD and afterwards create some slices or clips... Now I
 realize there was a variable missing. I calculate it using the
 calculator but afterwards the scalar is not available on all allredy
 created parts. This means I have to re-create all slices,... using the
 calculator filter as an input. I do not think this is very effective.
 Are there reasons for this? Any workarounds? Plans to change this?

 Regards BastiL
 ___
 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] Calculator and Time history

[Berk Geveci]

Unfortunately, doing what you want without writing a new filter is not
possible. I suggest modifying the temporal statistics filter to add
what you need. I'd like to see the next generation array calculator
supporting this sort of thing much better but that won't make it into
3.6.

-berk

On Tue, Mar 17, 2009 at 11:05 AM, David Fuentes fuente...@gmail.com wrote:
 Hello,

 Is there a way to use the Calculator on a variable at two different time
 instances?  I have a time series of data stored in an exodus file.  I'm
 trying to accumulate the sum of a variable over time and need to add the
 previous value of a variable to the variable's current value.  Is there
 a way to use the Temporal Cache, Temporal Shift Scale, or a similar
 filter to
 provide the calculator access to a variable at a previous time instance?


 Thank you,
 David Fuentes
 ___
 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] Calculator and vector products

[Dan Goldstein]

Am I correct that the cross() operation is still broken in ParaView  
3.4.0

related to the bug posted: http://www.gccxml.org/Bug/view.php?id=2903 ?

randall.hand once suggested the addition of the support for the vector  
cross product operator. It was added some time later. Then some new  
operators such as boolean ones were added and during this process  
unfortunately the vector cross product operator was carelessly  
disabled due to the incorrect check on the number of the input  
parameters.


The correct format of a vector cross product operation is:


vector_C = cross(vector_A, vector_B)


INSTEAD OF


cross(vector_A, vector_B, vector_C)


In other words, there should be TWO parameters and ONE comma.

However, the bug in vtkFunctionParser:: CheckSyntax() occurred  
within the following segment (between line 1444 and line 1453):



if ((functionNumber == VTK_PARSER_MIN) ||
(functionNumber == VTK_PARSER_MAX))
  {
  expectCommaOnParenthesisCount[parenthesisCount+1] = 1;
  }
if ((functionNumber == VTK_PARSER_IF) ||
(functionNumber == VTK_PARSER_CROSS))
  {
  expectTwoCommasOnParenthesisCount[parenthesisCount+1] = 1;
  }


Now this segment has been replaced with


if ((functionNumber == VTK_PARSER_MIN) ||
(functionNumber == VTK_PARSER_MAX) ||
(functionNumber == VTK_PARSER_CROSS))
  {
  expectCommaOnParenthesisCount[parenthesisCount+1] = 1;
  }
if (functionNumber == VTK_PARSER_IF)
  {
  expectTwoCommasOnParenthesisCount[parenthesisCount+1] = 1;
  }


Now the code performs correct check on the input format in terms  
of vector cross product and the suggested functionality is supported.


  Thanks for suggesting the enhancement.

  new revision: 1.43; previous revision: 1.42
It says it is fixed but it seems to exhibit the behavior  described it  
the history of this bug (in 3.4.0). Namely if you give it two  
arguments it complains

about needing three? Is this fixed in the cvs version?

Thanks

Dan

On Mar 4, 2009, at 4:23 PM, Jacques Papper wrote:


Thanks for the answer. I guess I missed the cross button !
(The whole point was that I didn't want to write out the cross  
product anymore !! :)


2009/3/4 Scott, W Alan wasc...@sandia.gov
Silly me, of course.  Math class was just too many years ago.

alan

-Original Message-
From: Pebay, Philippe P
Sent: Wednesday, March 04, 2009 2:59 PM
To: Scott, W Alan; 'Jacques Papper'; 'paraview'
Subject: RE: [Paraview] Calculator and vector products

Hello

The + sighs between cross terms should be replaced by - signs as  
follows:

   i ( a_2b_3 - a_3b_2 )
 + j ( a_3b_1 - a_1b_3 )
 + k (a_1b_2 - a_2b_1 )

P.

--
Philippe Pébay
Sandia National Laboratories


From: paraview-boun...@paraview.org [paraview-boun...@paraview.org]  
On Behalf Of Scott, W Alan [wasc...@sandia.gov]

Sent: Wednesday, March 04, 2009 1:30 PM
To: 'Jacques Papper'; 'paraview'
Subject: Re: [Paraview] Calculator and vector products

I don't know if this is correct, but I took a quick attempt at  
making a cross product.  I am using the dataset can.exo.  In the  
calculator, I am trying to create the cross of the DISP and ACCL  
vectors.  Here is the formula:


iHat*(DISPL_Y*VEL_Z+DISPL_Z*VEL_Y)+jHat*(DISPL_X*VEL_Z+DISPL_Z*VEL_X) 
+kHat*(DISPL_X*VEL_Y+DISPL_Y*VEL_X)




Alan

-Original Message-
From: paraview-boun...@paraview.org [mailto:paraview-boun...@paraview.org 
] On Behalf Of Jacques Papper

Sent: Wednesday, March 04, 2009 12:27 PM
To: 'paraview'
Subject: [Paraview] Calculator and vector products

I am trying to do a vector product with the Calculator, but this  
seems to fail Error deciding between ambiguous operators.
Is there a way to do vector products ? Or is this something that  
needs to be implemented ?


Jacques PAPPER
Applied CFD Team Leader
Tel: +44 (0) 1234 324677


---
This email contains information that is private and confidential and  
is intended only for the addressee.  If you are not the intended  
recipient please delete it and notify us immediately by e-mailing  
the sender.
Note: All email sent to or from this address may be accessed by  
someone other than the recipient, for system management and security  
reasons.
Aircraft Research Association Ltd.  Registered in England,  
Registration No 503668 Registered Office: Manton Lane, Bedford MK41  
7PF England VAT No GB 196351245



___
Powered by www.kitware.com

Re: [Paraview] Calculator and vector products

[David E DeMarle]

Yes, that was fixed after 3.4.0 was released. It works in CVS head.

On Thu, Mar 5, 2009 at 11:18 AM, Dan Goldstein d...@cora.nwra.com wrote:
 Am I correct that the cross() operation is still broken in ParaView 3.4.0
 related to the bug posted: http://www.gccxml.org/Bug/view.php?id=2903 ?
 randall.hand once suggested the addition of the support for the vector cross
 product operator. It was added some time later. Then some new operators such
 as boolean ones were added and during this process unfortunately the vector
 cross product operator was carelessly disabled due to the incorrect check on
 the number of the input parameters.

 The correct format of a vector cross product operation is:

 
 vector_C = cross(vector_A, vector_B)
 

 INSTEAD OF

 
 cross(vector_A, vector_B, vector_C)
 

 In other words, there should be TWO parameters and ONE comma.

 However, the bug in vtkFunctionParser:: CheckSyntax() occurred within
 the following segment (between line 1444 and line 1453):

 
 if ((functionNumber == VTK_PARSER_MIN) ||
 (functionNumber == VTK_PARSER_MAX))
   {
   expectCommaOnParenthesisCount[parenthesisCount+1] = 1;
   }
 if ((functionNumber == VTK_PARSER_IF) ||
 (functionNumber == VTK_PARSER_CROSS))
   {
   expectTwoCommasOnParenthesisCount[parenthesisCount+1] = 1;
   }
 

 Now this segment has been replaced with

 
 if ((functionNumber == VTK_PARSER_MIN) ||
 (functionNumber == VTK_PARSER_MAX) ||
 (functionNumber == VTK_PARSER_CROSS))
   {
   expectCommaOnParenthesisCount[parenthesisCount+1] = 1;
   }
 if (functionNumber == VTK_PARSER_IF)
   {
   expectTwoCommasOnParenthesisCount[parenthesisCount+1] = 1;
   }
 

 Now the code performs correct check on the input format in terms of
 vector cross product and the suggested functionality is supported.

   Thanks for suggesting the enhancement.

   new revision: 1.43; previous revision: 1.42
 It says it is fixed but it seems to exhibit the behavior  described it the
 history of this bug (in 3.4.0). Namely if you give it two arguments
 it complains
 about needing three? Is this fixed in the cvs version?
 Thanks
 Dan
 On Mar 4, 2009, at 4:23 PM, Jacques Papper wrote:

 Thanks for the answer. I guess I missed the cross button !
 (The whole point was that I didn't want to write out the cross product
 anymore !! :)

 2009/3/4 Scott, W Alan wasc...@sandia.gov

 Silly me, of course.  Math class was just too many years ago.

 alan

 -Original Message-
 From: Pebay, Philippe P
 Sent: Wednesday, March 04, 2009 2:59 PM
 To: Scott, W Alan; 'Jacques Papper'; 'paraview'
 Subject: RE: [Paraview] Calculator and vector products

 Hello

 The + sighs between cross terms should be replaced by - signs as follows:
    i ( a_2b_3 - a_3b_2 )
  + j ( a_3b_1 - a_1b_3 )
  + k (a_1b_2 - a_2b_1 )

 P.

 --
 Philippe Pébay
 Sandia National Laboratories

 
 From: paraview-boun...@paraview.org [paraview-boun...@paraview.org] On
 Behalf Of Scott, W Alan [wasc...@sandia.gov]
 Sent: Wednesday, March 04, 2009 1:30 PM
 To: 'Jacques Papper'; 'paraview'
 Subject: Re: [Paraview] Calculator and vector products

 I don't know if this is correct, but I took a quick attempt at making a
 cross product.  I am using the dataset can.exo.  In the calculator, I am
 trying to create the cross of the DISP and ACCL vectors.  Here is the
 formula:


 iHat*(DISPL_Y*VEL_Z+DISPL_Z*VEL_Y)+jHat*(DISPL_X*VEL_Z+DISPL_Z*VEL_X)+kHat*(DISPL_X*VEL_Y+DISPL_Y*VEL_X)



 Alan

 -Original Message-
 From: paraview-boun...@paraview.org [mailto:paraview-boun...@paraview.org]
 On Behalf Of Jacques Papper
 Sent: Wednesday, March 04, 2009 12:27 PM
 To: 'paraview'
 Subject: [Paraview] Calculator and vector products

 I am trying to do a vector product with the Calculator, but this seems to
 fail Error deciding between ambiguous operators.
 Is there a way to do vector products ? Or is this something that needs to
 be implemented ?

 Jacques PAPPER
 Applied CFD Team Leader
 Tel: +44 (0) 1234 324677


 ---
 This email contains information that is private and confidential and is
 intended only for the addressee.  If you are not the intended recipient
 please delete it and notify us immediately by e-mailing the sender.
 Note: All email sent to or from this address may be accessed by someone
 other than the recipient, for system management and security reasons.
 Aircraft Research Association Ltd.  Registered in England

[Paraview] Calculator and vector products

[Jacques Papper]

I am trying to do a vector product with the Calculator, but this seems to
fail Error deciding between ambiguous operators.
Is there a way to do vector products ? Or is this something that needs to be
implemented ?

Jacques PAPPER
Applied CFD Team Leader
Tel: +44 (0) 1234 324677


---
This email contains information that is private and confidential and is 
intended only for the addressee.  If you are not the intended recipient please 
delete it and notify us immediately by e-mailing the sender.
Note: All email sent to or from this address may be accessed by someone other 
than the recipient, for system management and security reasons.
Aircraft Research Association Ltd.  Registered in England, Registration No 
503668 Registered Office: Manton Lane, Bedford MK41 7PF England VAT No GB 
196351245


___
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] Calculator and vector products

[Scott, W Alan]

I don't know if this is correct, but I took a quick attempt at making a cross 
product.  I am using the dataset can.exo.  In the calculator, I am trying to 
create the cross of the DISP and ACCL vectors.  Here is the formula:

iHat*(DISPL_Y*VEL_Z+DISPL_Z*VEL_Y)+jHat*(DISPL_X*VEL_Z+DISPL_Z*VEL_X)+kHat*(DISPL_X*VEL_Y+DISPL_Y*VEL_X)



Alan 

-Original Message-
From: paraview-boun...@paraview.org [mailto:paraview-boun...@paraview.org] On 
Behalf Of Jacques Papper
Sent: Wednesday, March 04, 2009 12:27 PM
To: 'paraview'
Subject: [Paraview] Calculator and vector products

I am trying to do a vector product with the Calculator, but this seems to fail 
Error deciding between ambiguous operators.
Is there a way to do vector products ? Or is this something that needs to be 
implemented ?

Jacques PAPPER
Applied CFD Team Leader
Tel: +44 (0) 1234 324677


---
This email contains information that is private and confidential and is 
intended only for the addressee.  If you are not the intended recipient please 
delete it and notify us immediately by e-mailing the sender.
Note: All email sent to or from this address may be accessed by someone other 
than the recipient, for system management and security reasons.
Aircraft Research Association Ltd.  Registered in England, Registration No 
503668 Registered Office: Manton Lane, Bedford MK41 7PF England VAT No GB 
196351245


___
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] Calculator and vector products

[Scott, W Alan]

Why isn't it one of the buttons?  Or am I being dense?

Alan


From: Moreland, Kenneth
Sent: Wednesday, March 04, 2009 2:36 PM
To: Scott, W Alan; Jacques Papper; paraview
Subject: Re: [Paraview] Calculator and vector products

The calculator supports a cross function:

cross(DISPL, VEL)

-Ken


On 3/4/09 2:30 PM, Scott, W Alan wasc...@sandia.gov wrote:

I don't know if this is correct, but I took a quick attempt at making a cross 
product.  I am using the dataset can.exo.  In the calculator, I am trying to 
create the cross of the DISP and ACCL vectors.  Here is the formula:

iHat*(DISPL_Y*VEL_Z+DISPL_Z*VEL_Y)+jHat*(DISPL_X*VEL_Z+DISPL_Z*VEL_X)+kHat*(DISPL_X*VEL_Y+DISPL_Y*VEL_X)



Alan

-Original Message-
From: paraview-boun...@paraview.org [mailto:paraview-boun...@paraview.org] On 
Behalf Of Jacques Papper
Sent: Wednesday, March 04, 2009 12:27 PM
To: 'paraview'
Subject: [Paraview] Calculator and vector products

I am trying to do a vector product with the Calculator, but this seems to fail 
Error deciding between ambiguous operators.
Is there a way to do vector products ? Or is this something that needs to be 
implemented ?

Jacques PAPPER
Applied CFD Team Leader
Tel: +44 (0) 1234 324677


---
This email contains information that is private and confidential and is 
intended only for the addressee.  If you are not the intended recipient please 
delete it and notify us immediately by e-mailing the sender.
Note: All email sent to or from this address may be accessed by someone other 
than the recipient, for system management and security reasons.
Aircraft Research Association Ltd.  Registered in England, Registration No 
503668 Registered Office: Manton Lane, Bedford MK41 7PF England VAT No GB 
196351245


___
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




     Kenneth Moreland
***  Sandia National Laboratories
***
*** *** ***  email: kmo...@sandia.gov
**  ***  **  phone: (505) 844-8919
***  web:   http://www.cs.unm.edu/~kmorel

___
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] Calculator and vector products

[Moreland, Kenneth]

I don't know.  Perhaps it should be.

-Ken


On 3/4/09 2:38 PM, Scott, W Alan wasc...@sandia.gov wrote:

Why isn't it one of the buttons?  Or am I being dense?

Alan


From: Moreland, Kenneth
Sent: Wednesday, March 04, 2009 2:36 PM
To: Scott, W Alan; Jacques Papper; paraview
Subject: Re: [Paraview] Calculator and vector products

The calculator supports a cross function:

cross(DISPL, VEL)

-Ken


On 3/4/09 2:30 PM, Scott, W Alan wasc...@sandia.gov wrote:

I don't know if this is correct, but I took a quick  attempt at making a cross 
product.  I am using the dataset can.exo.   In the calculator, I am trying to 
create the cross of the DISP and ACCL  vectors.  Here is the  formula:

iHat*(DISPL_Y*VEL_Z+DISPL_Z*VEL_Y)+jHat*(DISPL_X*VEL_Z+DISPL_Z*VEL_X)+kHat*(DISPL_X*VEL_Y+DISPL_Y*VEL_X)



Alan

-Original  Message-
From: paraview-boun...@paraview.org [mailto:paraview-boun...@paraview.org]  On 
Behalf Of Jacques Papper
Sent: Wednesday, March 04, 2009 12:27 PM
To:  'paraview'
Subject: [Paraview] Calculator and vector products

I am  trying to do a vector product with the Calculator, but this seems to fail 
 Error deciding between ambiguous operators.
Is there a way to do vector  products ? Or is this something that needs to be 
implemented ?

Jacques  PAPPER
Applied CFD Team Leader
Tel: +44 (0) 1234  324677


---
This email contains  information that is private and confidential and is 
intended only for the  addressee.  If you are not the intended recipient please 
delete it and  notify us immediately by e-mailing the sender.
Note: All email sent to or  from this address may be accessed by someone other 
than the recipient, for  system management and security reasons.
Aircraft Research Association Ltd.   Registered in England, Registration No 
503668 Registered Office: Manton  Lane, Bedford MK41 7PF England VAT No GB  
196351245


___
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




     Kenneth Moreland
***  Sandia National Laboratories
***
*** *** ***  email: kmo...@sandia.gov
**  ***  **  phone: (505) 844-8919
***  web:   http://www.cs.unm.edu/~kmorel




     Kenneth Moreland
***  Sandia National Laboratories
***
*** *** ***  email: kmo...@sandia.gov
**  ***  **  phone: (505) 844-8919
***  web:   http://www.cs.unm.edu/~kmorel

___
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] Calculator and vector products

[Scott, W Alan]

Silly me, of course.  Math class was just too many years ago.

alan 

-Original Message-
From: Pebay, Philippe P 
Sent: Wednesday, March 04, 2009 2:59 PM
To: Scott, W Alan; 'Jacques Papper'; 'paraview'
Subject: RE: [Paraview] Calculator and vector products

Hello

The + sighs between cross terms should be replaced by - signs as follows:
i ( a_2b_3 - a_3b_2 )
 + j ( a_3b_1 - a_1b_3 )
 + k (a_1b_2 - a_2b_1 )

P.
 
--
Philippe Pébay
Sandia National Laboratories


From: paraview-boun...@paraview.org [paraview-boun...@paraview.org] On Behalf 
Of Scott, W Alan [wasc...@sandia.gov]
Sent: Wednesday, March 04, 2009 1:30 PM
To: 'Jacques Papper'; 'paraview'
Subject: Re: [Paraview] Calculator and vector products

I don't know if this is correct, but I took a quick attempt at making a cross 
product.  I am using the dataset can.exo.  In the calculator, I am trying to 
create the cross of the DISP and ACCL vectors.  Here is the formula:

iHat*(DISPL_Y*VEL_Z+DISPL_Z*VEL_Y)+jHat*(DISPL_X*VEL_Z+DISPL_Z*VEL_X)+kHat*(DISPL_X*VEL_Y+DISPL_Y*VEL_X)



Alan

-Original Message-
From: paraview-boun...@paraview.org [mailto:paraview-boun...@paraview.org] On 
Behalf Of Jacques Papper
Sent: Wednesday, March 04, 2009 12:27 PM
To: 'paraview'
Subject: [Paraview] Calculator and vector products

I am trying to do a vector product with the Calculator, but this seems to fail 
Error deciding between ambiguous operators.
Is there a way to do vector products ? Or is this something that needs to be 
implemented ?

Jacques PAPPER
Applied CFD Team Leader
Tel: +44 (0) 1234 324677


---
This email contains information that is private and confidential and is 
intended only for the addressee.  If you are not the intended recipient please 
delete it and notify us immediately by e-mailing the sender.
Note: All email sent to or from this address may be accessed by someone other 
than the recipient, for system management and security reasons.
Aircraft Research Association Ltd.  Registered in England, Registration No 
503668 Registered Office: Manton Lane, Bedford MK41 7PF England VAT No GB 
196351245


___
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


___
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] calculator filter with pvpython

[David E DeMarle]

If you mean the new python based calculator in the development
version, perhaps Berk can chime in. Otherwise, if you meant, how do I
use the calculator filter from within python, perhaps this email will
be of use:

http://paraview.markmail.org/search/?q=calculator%20filter%20python#query:calculator%20filter%20python+page:1+mid:uvj55aql4e5rrh7a+state:results

On Tue, Feb 24, 2009 at 5:20 AM, Michael Buchmayr
michi.buchm...@hotmail.fr wrote:
 Hallo,

 I'm having a hard time writing a Python script using the Calculator filter.
 Does anybody of you have a working example that he/she can send me?

 Thanks,
 Michael

 
 Votre correspondant a choisi Hotmail et profite d'un stockage quasiment
 illimité. Créez un compte Hotmail gratuitement !
 ___
 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





-- 
David E DeMarle
Kitware, Inc.
RD Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109
___
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] calculator filter via python

[Utkarsh Ayachit]

Alas there's no way for the python programmable filter to ask for a
particular timestep currently. This should be remedied soon. Feel free
to add a bug report at:
www.paraview.org/Bug

Thanks
Utkarsh

On Fri, Jan 2, 2009 at 4:00 PM, Peter Brady petertbr...@gmail.com wrote:
 I don't think I can do what I originally intended via the calculator
 filter due to the need to access the data in center[i][k] which is a
 data array in my script but the function parser won't know what to do
 with it.  I was able to make some good progress using the programmable
 filter and the information on the wiki.

 My main question at this point is how do I access the time data from
 the programmable filter?  I am using multiblockdatasets.

 Thanks,
 Peter.

 On Fri, Jan 2, 2009 at 11:04 AM, Peter Brady petertbr...@gmail.com wrote:
 Hello all,

 I am trying to do calculations based on coordinate locations.  In the
 GUI I can simply select 'coordsX', 'coordsY', 'coordsZ'.  From python
 things seem to be more complicated.  I've tried the snippet below with
 several variations and keep getting errors

 calc_radius = servermanager.filters.Calculator(Input=g_cont)
 calc_radius.AddCoordinateScalarVariable('coordsX', 0)
 calc_radius.Function =
 'sqrt((coordsX-center[i][0])^2+(coordsY-center[i][1])^2+(coordsZ-center[i][2])^2)'
 calc_radius.UpdatePipeline()

 I've also tried
 calc_radius.AddCoordinateScalarVariable('coordsX')
 but I get the error:
 calc_radius.AddCoordinateScalarVariable('coordsX')
 TypeError: __call__() takes exactly 1 argument (2 given)

 I've also tried using the scalar array name ('G' in this case) in
 place of coordsX but have met the same error message.

 What is the correct way of doing this?

 Also, I've tried using the PV-Dump.py script that was suggested to me
 previously but am met with the error:

 Traceback (most recent call last):
  File console, line 1, in module
  File string, line 33, in allToPython
  File string, line 48, in proxiesToPython
  File string, line 149, in __orderProxies
 AttributeError: 'NoneType' object has no attribute 'groups'

 The offending lines are:
 def __orderProxies( proxies ):
Returns an array, where each entry contains the names of the proxies 
 that
depend on the previous array entry.
patternName   = re.compile(' *XMLName: *(.*)')
patternValues = re.compile(' *Values: *(.*)')
patternHex= re.compile('^0x[0-9a-f]+$')
pmanager  = servermanager.ProxyManager()

dependencies  = {}# COLLECT DEPS
for group in proxies: # For each proxy
  for name in proxies[group]:
dependencies[group+':'+name] = {} # Init its 
 depend.
proxy = proxies[group][name]

for prop in proxy:
 148  match = patternName.search( str(prop) )
 149  propName  = match.groups()[0]

 I was hoping that this script would be very helpful.  Anyone else have
 similar problems?

 Thanks in advance for your help,
 Peter.

 ___
 ParaView mailing list
 ParaView@paraview.org
 http://www.paraview.org/mailman/listinfo/paraview

___
ParaView mailing list
ParaView@paraview.org
http://www.paraview.org/mailman/listinfo/paraview

Re: [Paraview] calculator filter via python

[Peter Brady]

I don't think I can do what I originally intended via the calculator
filter due to the need to access the data in center[i][k] which is a
data array in my script but the function parser won't know what to do
with it.  I was able to make some good progress using the programmable
filter and the information on the wiki.

My main question at this point is how do I access the time data from
the programmable filter?  I am using multiblockdatasets.

Thanks,
Peter.

On Fri, Jan 2, 2009 at 11:04 AM, Peter Brady petertbr...@gmail.com wrote:
 Hello all,

 I am trying to do calculations based on coordinate locations.  In the
 GUI I can simply select 'coordsX', 'coordsY', 'coordsZ'.  From python
 things seem to be more complicated.  I've tried the snippet below with
 several variations and keep getting errors

 calc_radius = servermanager.filters.Calculator(Input=g_cont)
 calc_radius.AddCoordinateScalarVariable('coordsX', 0)
 calc_radius.Function =
 'sqrt((coordsX-center[i][0])^2+(coordsY-center[i][1])^2+(coordsZ-center[i][2])^2)'
 calc_radius.UpdatePipeline()

 I've also tried
 calc_radius.AddCoordinateScalarVariable('coordsX')
 but I get the error:
 calc_radius.AddCoordinateScalarVariable('coordsX')
 TypeError: __call__() takes exactly 1 argument (2 given)

 I've also tried using the scalar array name ('G' in this case) in
 place of coordsX but have met the same error message.

 What is the correct way of doing this?

 Also, I've tried using the PV-Dump.py script that was suggested to me
 previously but am met with the error:

 Traceback (most recent call last):
  File console, line 1, in module
  File string, line 33, in allToPython
  File string, line 48, in proxiesToPython
  File string, line 149, in __orderProxies
 AttributeError: 'NoneType' object has no attribute 'groups'

 The offending lines are:
 def __orderProxies( proxies ):
Returns an array, where each entry contains the names of the proxies 
 that
depend on the previous array entry.
patternName   = re.compile(' *XMLName: *(.*)')
patternValues = re.compile(' *Values: *(.*)')
patternHex= re.compile('^0x[0-9a-f]+$')
pmanager  = servermanager.ProxyManager()

dependencies  = {}# COLLECT DEPS
for group in proxies: # For each proxy
  for name in proxies[group]:
dependencies[group+':'+name] = {} # Init its 
 depend.
proxy = proxies[group][name]

for prop in proxy:
 148  match = patternName.search( str(prop) )
 149  propName  = match.groups()[0]

 I was hoping that this script would be very helpful.  Anyone else have
 similar problems?

 Thanks in advance for your help,
 Peter.

___
ParaView mailing list
ParaView@paraview.org
http://www.paraview.org/mailman/listinfo/paraview

Re: [Paraview] Calculator speed

[Berk Geveci]

(assuming you are using cvs paraview)
In the programmable filter, you can do something like:

from paraview import numpy_support

input = self.GetInputDataObject(0, 0)
ar = numpy_support.vtk_to_numpy(input.GetPointData().GetArray(pressure))
ar2 = ar*2
newArray = nump7_support.numpy_to_vtk(ar2, True)
newArray.SetName(pressure times 2)
output = self.GetOutputDataObject(0)
output.GetPointData().AddArray(newArray)

In the future, this should look like:
output.point_data['pressure times 2'] = input.point_data['pressure'] * 2

-berk


On Tue, Sep 9, 2008 at 2:40 PM, Tobias Brandvik [EMAIL PROTECTED] wrote:
 Thanks for the replies. I've got some experience with Python/NumPy so
 any pointers on that approach would be appreciated.

 Tobias


 --
 Tobias Brandvik
 PhD Student
 Whittle Laboratory
 1 JJ Thomson Avenue
 Cambridge CB3 0DY, UK

 On Tue, Sep 9, 2008 at 2:51 PM, Berk Geveci [EMAIL PROTECTED] wrote:
 The array calculator does not use Python but it is slow nevertheless.
 Actually, this could be done much faster using Python/NumPy. This is
 currently possible but hard to do (complicated API). We are working on
 an easier-to-use interface.  If you are adventurous, I can give you
 some pointers. Otherwise, C++ custom filter is the way to go.

 -berk

 On Tue, Sep 9, 2008 at 8:58 AM, Tobias Brandvik [EMAIL PROTECTED] wrote:
 Hi,

 I've written a CFD solver that uses Paraview in parallel mode with
 hdf5/xdmf. Currently, the application writes out the primary variables
 and lets the user calculate any desired secondary variables using the
 calculator. However, this procedure is very slow -- it seems to be an
 order of magnitude faster to calculate the data in the solver itself
 and have Paraview read it from disk. I suspect this is because the
 calculator expressions get translated to python code, but I might also
 be doing something wrong.

 Am I correct in thinking that the easiest way to fix this would be to
 write a custom filter in C++?

 Cheers,
 Tobias

 --
 Tobias Brandvik
 PhD Student
 Whittle Laboratory
 1 JJ Thomson Avenue
 Cambridge CB3 0DY, UK
 ___
 ParaView mailing list
 ParaView@paraview.org
 http://www.paraview.org/mailman/listinfo/paraview



___
ParaView mailing list
ParaView@paraview.org
http://www.paraview.org/mailman/listinfo/paraview

Re: [Paraview] Calculator speed

[Weirs, V Gregory]

Dig it.

Is numpy_support documented anywhere?

Thanks,
Greg


On 9/11/08 10:31 AM, Berk Geveci [EMAIL PROTECTED] wrote:

(assuming you are using cvs paraview)
In the programmable filter, you can do something like:

from paraview import numpy_support

input = self.GetInputDataObject(0, 0)
ar = numpy_support.vtk_to_numpy(input.GetPointData().GetArray(pressure))
ar2 = ar*2
newArray = nump7_support.numpy_to_vtk(ar2, True)
newArray.SetName(pressure times 2)
output = self.GetOutputDataObject(0)
output.GetPointData().AddArray(newArray)

In the future, this should look like:
output.point_data['pressure times 2'] = input.point_data['pressure'] * 2

-berk


On Tue, Sep 9, 2008 at 2:40 PM, Tobias Brandvik [EMAIL PROTECTED] wrote:
 Thanks for the replies. I've got some experience with Python/NumPy so
 any pointers on that approach would be appreciated.

 Tobias


 --
 Tobias Brandvik
 PhD Student
 Whittle Laboratory
 1 JJ Thomson Avenue
 Cambridge CB3 0DY, UK

 On Tue, Sep 9, 2008 at 2:51 PM, Berk Geveci [EMAIL PROTECTED] wrote:
 The array calculator does not use Python but it is slow nevertheless.
 Actually, this could be done much faster using Python/NumPy. This is
 currently possible but hard to do (complicated API). We are working on
 an easier-to-use interface.  If you are adventurous, I can give you
 some pointers. Otherwise, C++ custom filter is the way to go.

 -berk

 On Tue, Sep 9, 2008 at 8:58 AM, Tobias Brandvik [EMAIL PROTECTED] wrote:
 Hi,

 I've written a CFD solver that uses Paraview in parallel mode with
 hdf5/xdmf. Currently, the application writes out the primary variables
 and lets the user calculate any desired secondary variables using the
 calculator. However, this procedure is very slow -- it seems to be an
 order of magnitude faster to calculate the data in the solver itself
 and have Paraview read it from disk. I suspect this is because the
 calculator expressions get translated to python code, but I might also
 be doing something wrong.

 Am I correct in thinking that the easiest way to fix this would be to
 write a custom filter in C++?

 Cheers,
 Tobias

 --
 Tobias Brandvik
 PhD Student
 Whittle Laboratory
 1 JJ Thomson Avenue
 Cambridge CB3 0DY, UK
 ___
 ParaView mailing list
 ParaView@paraview.org
 http://www.paraview.org/mailman/listinfo/paraview



___
ParaView mailing list
ParaView@paraview.org
http://www.paraview.org/mailman/listinfo/paraview


___
ParaView mailing list
ParaView@paraview.org
http://www.paraview.org/mailman/listinfo/paraview

Re: [Paraview] Calculator speed

[Berk Geveci]

It will be once we update the wiki pages :-)

On Thu, Sep 11, 2008 at 1:18 PM, Weirs, V Gregory [EMAIL PROTECTED] wrote:

 Dig it.

 Is numpy_support documented anywhere?

 Thanks,
 Greg


 On 9/11/08 10:31 AM, Berk Geveci [EMAIL PROTECTED] wrote:

 (assuming you are using cvs paraview)
 In the programmable filter, you can do something like:

 from paraview import numpy_support

 input = self.GetInputDataObject(0, 0)
 ar = numpy_support.vtk_to_numpy(input.GetPointData().GetArray(pressure))
 ar2 = ar*2
 newArray = nump7_support.numpy_to_vtk(ar2, True)
 newArray.SetName(pressure times 2)
 output = self.GetOutputDataObject(0)
 output.GetPointData().AddArray(newArray)

 In the future, this should look like:
 output.point_data['pressure times 2'] = input.point_data['pressure'] * 2

 -berk


 On Tue, Sep 9, 2008 at 2:40 PM, Tobias Brandvik [EMAIL PROTECTED] wrote:
 Thanks for the replies. I've got some experience with Python/NumPy so
 any pointers on that approach would be appreciated.

 Tobias


 --
 Tobias Brandvik
 PhD Student
 Whittle Laboratory
 1 JJ Thomson Avenue
 Cambridge CB3 0DY, UK

 On Tue, Sep 9, 2008 at 2:51 PM, Berk Geveci [EMAIL PROTECTED]
 wrote:
 The array calculator does not use Python but it is slow nevertheless.
 Actually, this could be done much faster using Python/NumPy. This is
 currently possible but hard to do (complicated API). We are working on
 an easier-to-use interface.  If you are adventurous, I can give you
 some pointers. Otherwise, C++ custom filter is the way to go.

 -berk

 On Tue, Sep 9, 2008 at 8:58 AM, Tobias Brandvik [EMAIL PROTECTED]
 wrote:
 Hi,

 I've written a CFD solver that uses Paraview in parallel mode with
 hdf5/xdmf. Currently, the application writes out the primary variables
 and lets the user calculate any desired secondary variables using the
 calculator. However, this procedure is very slow -- it seems to be an
 order of magnitude faster to calculate the data in the solver itself
 and have Paraview read it from disk. I suspect this is because the
 calculator expressions get translated to python code, but I might also
 be doing something wrong.

 Am I correct in thinking that the easiest way to fix this would be to
 write a custom filter in C++?

 Cheers,
 Tobias

 --
 Tobias Brandvik
 PhD Student
 Whittle Laboratory
 1 JJ Thomson Avenue
 Cambridge CB3 0DY, UK
 ___
 ParaView mailing list
 ParaView@paraview.org
 http://www.paraview.org/mailman/listinfo/paraview



 ___
 ParaView mailing list
 ParaView@paraview.org
 http://www.paraview.org/mailman/listinfo/paraview



___
ParaView mailing list
ParaView@paraview.org
http://www.paraview.org/mailman/listinfo/paraview

Re: [Paraview] Calculator speed

[pat marion]

Or in the meantime...


 from paraview import numpy_support
 help(numpy_support)

Help on module paraview.numpy_support in paraview:

NAME
paraview.numpy_support

FILE

/source/paraview/streaming-release/build/Utilities/VTKPythonWrapping/paraview/numpy_support.py

DESCRIPTION
This module adds support to easily import and export NumPy
(http://numpy.scipy.org) arrays into/out of VTK arrays.  The code is
loosely based on TVTK (https://svn.enthought.com/enthought/wiki/TVTK).

This code depends on an addition to the VTK data arrays made by Berk
Geveci to make it support Python's buffer protocol (on Feb. 15, 2008).

The main functionality of this module is provided by the two functions:
numpy_to_vtk,
vtk_to_numpy.


Caveats:


 - Bit arrays in general do not have a numpy equivalent and are not
   supported.  Char arrays are also not easy to handle and might not
   work as you expect.  Patches welcome.

 - You need to make sure you hold a reference to a Numpy array you want
   to import into VTK.  If not you'll get a segfault (in the best case).
   The same holds in reverse when you convert a VTK array to a numpy
   array -- don't delete the VTK array.


Created by Prabhu Ramachandran in Feb. 2008.

FUNCTIONS
create_vtk_array(vtk_arr_type)
Internal function used to create a VTK data array from another
VTK array given the VTK array type.

get_numpy_array_type(vtk_array_type)
Returns a numpy array typecode given a VTK array type.

get_vtk_array_type(numpy_array_type)
Returns a VTK typecode given a numpy array.

get_vtk_to_numpy_typemap()
Returns the VTK array type to numpy array type mapping.

numpy_to_vtk(num_array, deep=0)
Converts a contiguous real numpy Array to a VTK array object.

This function only works for real arrays that are contiguous.
Complex arrays are NOT handled.  It also works for multi-component
arrays.  However, only 1, and 2 dimensional arrays are supported.
This function is very efficient, so large arrays should not be a
problem.

If the second argument is set to 1, the array is deep-copied from
from numpy. This is not as efficient as the default behavior
(shallow copy) and uses more memory but detaches the two arrays
such that the numpy array can be released.

WARNING: You must maintain a reference to the passed numpy array, if
the numpy data is gc'd and VTK will point to garbage which will in
the best case give you a segfault.

Parameters
--

- num_array :  a contiguous 1D or 2D, real numpy array.

vtk_to_numpy(vtk_array)
Converts a VTK data array to a numpy array.

Given a subclass of vtkDataArray, this function returns an
appropriate numpy array containing the same data -- it actually
points to the same data.

WARNING: This does not work for bit arrays.

Parameters
--

- vtk_array : `vtkDataArray`

  The VTK data array to be converted.

DATA
VTK_ID_TYPE_SIZE = 8
VTK_LONG_TYPE_SIZE = 8


On Thu, Sep 11, 2008 at 2:09 PM, Berk Geveci [EMAIL PROTECTED] wrote:
 It will be once we update the wiki pages :-)

 On Thu, Sep 11, 2008 at 1:18 PM, Weirs, V Gregory [EMAIL PROTECTED] wrote:

 Dig it.

 Is numpy_support documented anywhere?

 Thanks,
 Greg


 On 9/11/08 10:31 AM, Berk Geveci [EMAIL PROTECTED] wrote:

 (assuming you are using cvs paraview)
 In the programmable filter, you can do something like:

 from paraview import numpy_support

 input = self.GetInputDataObject(0, 0)
 ar = numpy_support.vtk_to_numpy(input.GetPointData().GetArray(pressure))
 ar2 = ar*2
 newArray = nump7_support.numpy_to_vtk(ar2, True)
 newArray.SetName(pressure times 2)
 output = self.GetOutputDataObject(0)
 output.GetPointData().AddArray(newArray)

 In the future, this should look like:
 output.point_data['pressure times 2'] = input.point_data['pressure'] * 2

 -berk


 On Tue, Sep 9, 2008 at 2:40 PM, Tobias Brandvik [EMAIL PROTECTED] wrote:
 Thanks for the replies. I've got some experience with Python/NumPy so
 any pointers on that approach would be appreciated.

 Tobias


 --
 Tobias Brandvik
 PhD Student
 Whittle Laboratory
 1 JJ Thomson Avenue
 Cambridge CB3 0DY, UK

 On Tue, Sep 9, 2008 at 2:51 PM, Berk Geveci [EMAIL PROTECTED]
 wrote:
 The array calculator does not use Python but it is slow nevertheless.
 Actually, this could be done much faster using Python/NumPy. This is
 currently possible but hard to do (complicated API). We are working on
 an easier-to-use interface.  If you are adventurous, I can give you
 some pointers. Otherwise, C++ custom filter is the way to go.

 -berk

 On Tue, Sep 9, 2008 at 8:58 AM, Tobias Brandvik [EMAIL PROTECTED]
 wrote:
 Hi,

 I've written a CFD solver that uses Paraview in parallel mode with
 

Re: [Paraview] Calculator speed

[Moreland, Kenneth]

Tobias,

I would agree that the parsing of calculator expressions is probably slowing
down the calculations.  I also agree that a custom filter would be the
easiest way to fix the problem (and would probably simplify things for
users).

-Ken


On 9/9/08 6:58 AM, Tobias Brandvik [EMAIL PROTECTED] wrote:

 Hi,

 I've written a CFD solver that uses Paraview in parallel mode with
 hdf5/xdmf. Currently, the application writes out the primary variables
 and lets the user calculate any desired secondary variables using the
 calculator. However, this procedure is very slow -- it seems to be an
 order of magnitude faster to calculate the data in the solver itself
 and have Paraview read it from disk. I suspect this is because the
 calculator expressions get translated to python code, but I might also
 be doing something wrong.

 Am I correct in thinking that the easiest way to fix this would be to
 write a custom filter in C++?

 Cheers,
 Tobias

 --
 Tobias Brandvik
 PhD Student
 Whittle Laboratory
 1 JJ Thomson Avenue
 Cambridge CB3 0DY, UK
 ___
 ParaView mailing list
 ParaView@paraview.org
 http://www.paraview.org/mailman/listinfo/paraview



___
ParaView mailing list
ParaView@paraview.org
http://www.paraview.org/mailman/listinfo/paraview