[vtkusers] Blending two scalar arrays on poly data?

[Wylie, Brian]

I don't know the answer to your question directly. But I will suggest
two alternatives.

1) Use the array calculator to 'combine' the values from the arrays in
some meaningful way.

2) Threshold method
   a) Color the surface with one variable
   b) Copy the surface, offset it toward the camera
   c) Color the new surface by the second variable
   d) Threshold the new surface (get rid of all low values or whatever)


Just food for thought...

  Brian Wylie - Org 1424
  Sandia National Laboratories
  MS 0822 - Building 880/A1-J
  (505)844-2238 FAX(505)845-0833    
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> -----Original Message-----
> From: vtkusers-bounces+bnwylie=sandia.gov at vtk.org 
> [mailto:vtkusers-bounces+bnwylie=sandia.gov at vtk.org] On 
> Behalf Of Kevin Teich
> Sent: Thursday, March 15, 2007 3:10 PM
> To: vtkusers at vtk.org
> Subject: [vtkusers] Blending two scalar arrays on poly data?
> 
> Hello,
> 
> I'm trying to mimic the behavior of an older surface viewer 
> in which we overlay one set of scalars over the entire 
> surface with its own color map. Then we have a second set of 
> scalars which we overlay in another color map, but only for 
> values within a certain threshold, and we do blending over 
> part of that range. I'm imagining some kind of filter object 
> that takes two DataArrays and two ScalarsToColors as inputs, 
> has some threshold settings, and outputs a single DataArray 
> and ScalarsToColors. I could do it by hand, but does 
> something like this already exist? If not, can somebody point 
> me to a similar filter to use as a starting point in writing my own?
> 
> Thanks.
> 
> --
> Kevin Teich
> 
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