[Paraview] Assign scalars/vectors to mesh points in vtkRectilinearGrid, C++

[Paw Møller]

Superb,
That was it. Thanks, both of you.

But I have another question.
The automatic scaling of the vector field works as expected.
The scaling of the temperature however does not(array of floats). It set
the range to [0 1], regardless of the actual values.

Paraview(under information) gives the data range = [3.5 1333.5], which is
correct. And if I manually set the color range to this, everything is good.
Pressing the automatic color scale(rescale to data), the used interval is
set back to [0 1].
Why is that?

I use to code suggested by Joe,
    vtkFloatArray* temperature = vtkFloatArray::New();
    temperature->SetName("Temperature");
    temperature->SetNumberOfComponents(1);
    temperature->SetNumberOfValues(mesh.nn);
    for(int i=0;i<mesh.nn;i++){
       temperature->SetValue(i,3.5);
    }
    rgrid->GetPointData()->AddArray(temperature);

And is it possible to update the plot if I overwrite the .vtr file, without
closing and reopening the file?

Paw
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