[vtkusers] Question on vtkDataArray::GetRange() and doubles...

[Charles Boivin]

Hello all!

Still playing with my own data reader, and I have yet another question
for you gurus. I have tried to see if this had been discussed before on
this mailing list, but could not find a relevant question when reading
through search results.

I want to know what the range of the values that I have just read is.
To do this, I use something like:

pArray = pPointData->GetArray(iArrayNumber);

(where pPointData is vtkPolyData::GetOutput()->GetPointData() ... )

and then using:

float afRange[2];
pArray->GetRange(afRange, iComponentNumber);

I can get the range in afRange[]. This works fine. 

My question has to do with the different data types... The array that I
have stored in vtkPolyData is actually a double array (vtkDoubleArray).
Yet, there does not seem to be a way to get the range returned as
doubles. Am I missing something, or is the loss of accuracy not too
important there when it comes to the range of scalar values?

Thank you in advance for your answers...

Charles Boivin