[vtkusers] Get/Set values Vector Data

[Allen Sanderson]

Here is some sample code:

vtkDoubleArray *velocityArray = vtkDoubleArray::New();
velocityArray->SetName(var.c_str());
// NOTE: you want to set the number of components BEFORE setting the number of Tuples so memory is correctly allocated.

velocityArray->SetNumberOfComponents(3);
velocityArray->SetNumberOfTuples(nTuples);
    
polydata->GetPointData()->AddArray(velocityArray);

double dx, dy, dz;

Loop: velocityArray->SetTuple3(index, dx, dy, dz);
Where : 0<= index < nTuples

velocityArray->Delete();


The get would be:

double *velocity = velocityArray->GetTuple3(l);
        
 
Cheers,

Allen


Allen Sanderson
SCI Institute
University of Utah
www.sci.utah.edu



On Mar 17, 2015, at 1:03 PM, Chiranjib Sur <sur.chiranjib at gmail.com> wrote:

> Hi All,
> I want to assign values (3 component vector) to all in a polydata set. 
> I found the email thread where the solution for a one component scalar data is explained (http://vtk.1045678.n5.nabble.com/Get-Set-values-in-scalar-data-td3259506.html)
> 
> Anybody can help explaining how to do this for a 3-component vector data type.
> 
> Thanks in advance.
> 
> Chiranjib Sur
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