# [Paraview] Help: Calculating Vorticity in paraview

Tue Oct 26 12:30:16 EDT 2010

```You can use the 'ComputeDerivatives' filter and select 'Vorticity' as the
output vector type.

2010/10/26 David E DeMarle <dave.demarle at kitware.com>

> And although there is no button for it, the standard calulcator will
> evaluate cross products if you type the expression in manually.
>
> The full list of expressions the calculator knows about are (from
> vtkFunctionParser.cxx)
> static char funcNames[NUMBFUNCS][10] = {
>    "abs(",  "exp(",   "ceil(", "floor(",
>    "ln(",   "log10(", "log(",  "sqrt(",
>    "sin(",  "sinh(",  "cos(",  "cosh(",
>    "tan(",  "tanh(",  "asin(", "acos(",
>    "atan(", "min(",   "max(",  "cross(",
>    "sign(", "mag(",   "norm(", "if("
> };
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 28 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-371-3971 x109
>
>
> 2010/10/26 Aurélien Marsan <aur.marsan at gmail.com>
>
> Or you can use the python calculator
>>
>> http://www.paraview.org/Wiki/Python_Calculator
>>
>>
>>
>> Le 26 octobre 2010 13:51, Aurélien Marsan <aur.marsan at gmail.com> a écrit
>> :
>>
>> Hi,
>>>
>>> In the calculator, you can see all the components of the vectors (in the
>>> scalars list). You can use the iHat, jHat and kHat vectors too.
>>> Then you should be able to calculate "manually" the cross product.
>>>
>>>
>>> 2010/10/26 Mubashir Ali <mubashir at iitk.ac.in>
>>>
>>> Hi,
>>>>
>>>> I have some transient Ensight gold data (cell data). I want to calculate
>>>> vorticity for each time step. I checked the calculator option in
>>>> paraview.
>>>> there i see dot product tab but not cross product tab. Can anyone please
>>>> help me with it. I am very very new to Paraview
>>>>
>>>> Kind Regards
>>>>
>>>> Mubashir Ali
>>>> mubashir at iitk.ac.in
>>>> Senior Project Associate
>>>> High Performance computing Lab,
>>>> Aerospace Department,
>>>> Indian Institute of Technology
>>>> Kanpur, India
>>>> _______________________________________________
>>>>
>>>> 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
>>>>
>>>> http://www.paraview.org/mailman/listinfo/paraview
>>>>
>>>
>>>
>>
>> _______________________________________________
>>
>> 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
>>
>> http://www.paraview.org/mailman/listinfo/paraview
>>
>>
>
> _______________________________________________
>
> 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
>