[vtk-developers] How to set several scalars to vtkPoint ?

[houssen]

May use a lookup table ? Not familiar with that but seems it's not what 
I need ?!...

Somebody knows how to get back to this broken link 
ttp://article.gmane.org/gmane.comp.lib.vtk.user/6761/match=points+scalar+color 
I got from 
http://public.kitware.com/pipermail/vtkusers/2003-August/019748.html

Le 2017-04-02 18:39, houssen a écrit :
> KO ! Does not work (realize I tried this before !) => I only get
> data1 OR data2 (never both of them) in the written .vtu file...
> It is possible to make this work or to create a N-sized-vector.
>
> BTW, data1 is "pressure", data2 is "velocity" (that is data 1 and 2
> are not related to each other)
>
> Franck
>
> Le 2017-04-02 18:24, Bill Lorensen a écrit :
>> Try
>> uGrid->GetPointdata()->AddArray(data2);
>>
>>
>> On Sun, Apr 2, 2017 at 12:01 PM, houssen <houssen at ipgp.fr> wrote:
>>> Hello,
>>>
>>> How to set several scalars to vtkPoint ?
>>>
>>> Seems vtkDataPoint scratchs the previous scalar array ?!
>>>
>>> vtkSmartPointer<vtkIntArray> data1 = 
>>> vtkSmartPointer<vtkIntArray>::New();
>>> data1->SetName("data1");
>>> vtkSmartPointer<vtkIntArray> data2 = 
>>> vtkSmartPointer<vtkIntArray>::New();
>>> data2->SetName("data2");
>>> for (...) {data1->SetValue(idx, d1[i]); data2->SetValue(idx, 
>>> d2[idx]) }
>>> uGrid->GetPointdata()->SetScalars(data1); // OK
>>> uGrid->GetPointdata()->SetScalars(data2); // data2 scratch data1 ?!
>>>
>>> uGrid->GetPointdata()->SetActiveScalar("data1") does not do what I 
>>> need :
>>> seems that it activate data1 back but "scratch" data2 back.
>>>
>>> uGrid is a vtkUnstructuredGrid : the final goal is to write the 
>>> grid to a
>>> file (with vtkWriter). In this file, I'd like to have BOTH data1 
>>> and data2
>>> for points.
>>> I only get either one or the other... How to get both ?
>>>
>>> Also tried to create a N-sized-vector (N=2 or 4) to associate to 
>>> the
>>> vtkPoint : does not work as it seems vector dimension MUST be 3. I 
>>> somebody
>>> knows a solution to attach a N-sized-vector to a vtkPoint, it could 
>>> solve my
>>> problem
>>>
>>> Franck
>>>
>>> PS : found nothing relevant on the web, targetting VTK-7.
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