[Paraview] problems setting vtkDoubleArray with 3 components

[Jérôme]

Hi !
Maybe I am an old-fashion programmer, but I don't think you are allowed to
initialized an array in this way. The braces should delimit constant
values... The best I can remember, the compiler should outputs errors for
your line :

double Tuple[3] = {xm_array -> GetValue(i), ym_array -> GetValue(i), 0.0};

Which one do you use?

Then for your specific problem, I recommend you to use the
InsertNextTupleValue from vtkDoubleArray instead of InsertNextTuple, that is
a pure virtual function of the parent class vtkDataArray.

I hope expert programmers will take a look at this !

Best regards,

Jerome


2009/3/15 Natalie Happenhofer <nataliehapp at hotmail.com>

>  Hi!
> I´d like to set a vtkDoubleArray with 3 Components, it should be a vector
> array, the code looks like this:
>
>
> vtkDoubleArray* momentum = vtkDoubleArray::New();
> momentum -> SetNumberOfTuples(numOfTuples);
> momentum -> SetNumberOfComponents(3);
>
> for(vtkIdType i = 0; i < numOfTuples; i++)
>     {double Tuple[3] = {xm_array -> GetValue(i), ym_array -> GetValue(i),
> 0.0};
>
>      momentum -> InsertNextTuple(Tuple);
>     }
>
> Executing the code, I get the following error:
> " Point array Momentum with 3 components, has 78520 tuples but there are
> only 58890 points"
>
> numOfTuples just has the value 58890, it should not be inserting more
> tuples than that.. ?
>
> thx,
> Natalie
>
>
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