[Paraview] Filter for interactive spreadsheet?

Tue Jan 17 05:12:00 EST 2017

Once again: I just see that I received more information than just the
assertion error:

""

Traceback (most recent call last):

File "<string>", line 4, in <module>

File "D:\Users\cbockenm\Documents\BTest\ParaView\OwnBinaries\ParaView
5.1.2\lib\site-packages\paraview\calculator.py", line 122, in execute

variables = get_arrays(inputs[0].GetAttributes(self.GetArrayAssociation()))

File "D:\Users\cbockenm\Documents\BTest\ParaView\OwnBinaries\ParaView
5.1.2\lib\site-packages\paraview\calculator.py", line 34, in get_arrays

arrays[varname] = attribs[key]

File "D:\Users\cbockenm\Documents\BTest\ParaView\OwnBinaries\ParaView
5.1.2\lib\site-packages\paraview\vtk\numpy_interface\dataset_adapter.py",
line 587, in __getitem__

return self.GetArray(idx)

File "D:\Users\cbockenm\Documents\BTest\ParaView\OwnBinaries\ParaView
5.1.2\lib\site-packages\paraview\vtk\numpy_interface\dataset_adapter.py",
line 599, in GetArray

array = vtkDataArrayToVTKArray(vtkarray, self.DataSet)

File "D:\Users\cbockenm\Documents\BTest\ParaView\OwnBinaries\ParaView
5.1.2\lib\site-packages\paraview\vtk\numpy_interface\dataset_adapter.py",
line 138, in vtkDataArrayToVTKArray

narray = numpy_support.vtk_to_numpy(array)

File "D:\Users\cbockenm\Documents\BTest\ParaView\OwnBinaries\ParaView
5.1.2\lib\site-packages\vtk\util\numpy_support.py", line 214, in
vtk_to_numpy

"Unsupported array type %s"%typ

AssertionError: Unsupported array type 15

""

It does not help me a lot, but maybe it indicates to somebody else what
might be the problem!?

Regards,
Cornelis

2017-01-17 11:08 GMT+01:00 Cornelis Bockemühl <cornelis.bockemuehl at gmail.com
>:

> Thanks again Andy!
>
> I really appreciate your hints: It has already pointed me into a good
> direction!
>
> Actually what I tried for my purpose was:
>
> 1. do a selection, apply the "extract selection" filter, with the "keep
> topology" option on. With this I am getting just one additional column -
> "vtkInsidedness" - and this tells me whether in the initial data (actually
> cells of an "unstructured grid") an item was selected (value 1) or not
> (value -1).
>
> 2. on top of this I applied the "calculator" filter like you suggested,
> and with just an if(1=vtkInsidedness, ...) I could get exactly what I
> wanted!
>
> Bottom line: these two filters are actually my friends for the purpose!
>
> Only two things I am still struggling:
>
> 1. if I want this procedure to be a bit more simple I should maybe still
> write some kind of "wrapper filter" that does the above steps for me just
> in one. Like derive one filter from the calculator, including the nice
> calculator panel on the left, and just automatically do the "extract
> selection" before applying the calculator
>
> 2. with the "python calculator" I was not successful, and I wonder why!?
> Because if I applied that python calculator to my original "unstructured
> grid" data set everything worked fine (so it is not about missing python
> support!), but if I did the procedure as above, applying the "python
> calculator" on the extracted data, I always got a message: "AssertionError:
> Unsupported array type 15". This was independent on what was the expression
> I tried to apply, even if it was just a constant value! Looking into the
> source code it looks indeed like a mistake if some column has "type 15": I
> found only about 10 type definitions at all...
>
> Regards,
> Cornelis
>
> 2017-01-17 10:51 GMT+01:00 Andy Bauer <andy.bauer at kitware.com>:
>
>> Hi Cornelis,
>>
>> How would you like to select the single or group of values to change?
>> Also, how would you like to change them (e.g. the same transformation for
>> each or each with its own transformation)? These two questions are meant to
>> guide you to do what you want in ParaView.
>>
>> You probably want to look at the Python Programmable Filter (
>> http://www.paraview.org/Wiki/Python_Programmable_Filter) for changing
>> individual array values. If you are working in serial you may also be able
>> to bring in the entities to change based on a selection. A better solution
>> would be to use the global ids filter, then do a selection on what you want
>> and finally pass that in as a secondary input to the Python Programmable
>> filter.
>>
>> Developing your own filter is also a possibility.
>>
>> cheers,
>> Andy
>>
>> On Tue, Jan 17, 2017 at 1:38 AM, Cornelis Bockemühl <
>> cornelis.bockemuehl at gmail.com> wrote:
>>
>>> Dear Andy,
>>>
>>> Thanks for this hint: Indeed I was not fully aware of the way how you
>>> can easily add new calculated columns with these two filters! What they do
>>> is some kind of "vector math", resulting in a new vector that is appended
>>> to the input data set.
>>>
>>> However my question went in the direction of directly editing single
>>> values, or groups of values.
>>>
>>> Example: Assume that we have a data array "Density" in some data set,
>>> then I want to be able to directly change the "density" value for just a
>>> few cells, or even better: for a selected set of data rows.
>>>
>>> Because: If such a thing does not exist yet I would consider trying to
>>> write it myself - but I do not insist on reinventing any wheel! And I am
>>> sometimes astonished how many "wheels" already exist in the ParaView
>>> "world"...
>>>
>>> Regards,
>>> Cornelis
>>>
>>> PS: Why do I never see my own posts to the paraview mailing list? Is
>>> this a bug or a feature or something I am doing wrong?
>>>
>>> 2017-01-17 0:57 GMT+01:00 Andy Bauer <andy.bauer at kitware.com>:
>>>
>>>> This can be done through either the calculator or python calculator
>>>> filter. If you're in the spreadsheet view it should switch over to the
>>>> calculator/python calculator output when the filter is applied.
>>>>
>>>> On Mon, Jan 16, 2017 at 5:14 PM, Cornelis Bockemühl <
>>>> cornelis.bockemuehl at gmail.com> wrote:
>>>>
>>>>> Has somebody already written and contributed a filter that allows some
>>>>> simple "spreadsheet like" user manipulation of the data?
>>>>>
>>>>> I mean something that accepts some data input, then allows user
>>>>> changes, and the output would be the changed data set.
>>>>>
>>>>> Regards,
>>>>> Cornelis
>>>>>
>>>>> --
>>>>> Cornelis Bockemühl
>>>>> Basel, Schweiz
>>>>>
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>>>>>
>>>>
>>>
>>>
>>> --
>>> Cornelis Bockemühl
>>> Basel, Schweiz
>>>
>>
>>
>
>
> --
> Cornelis Bockemühl
> Basel, Schweiz
>

-- 
Cornelis Bockemühl
Basel, Schweiz
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