[vtkusers] How to map 2 scalar attributes simultaneously?

[Mathieu Malaterre]

Immo,

	Use vtkThresholdPoints and not vtkThreshold. You can use 
SetActiveScalars on:

vtkPolyDataReader reader
reader->SetFileName "data.vtk"
reader->Update()
reader->GetOutput()->GetPointData()->SetActiveScalars( "scalar1 ");

HTH
Mathieu

Immo Trinks wrote:
> Thank you Mathieu.
> 
> How do I tell vtkThreshold which scalar to use?
> I use one vtkPolyDataReader and set one scalar name that I want to use.
> 
> vtkPolyDataReader dataReader
> dataReader SetFileName "data.vtk"
> dataReader SetScalarsName "scalar1"
> 
> Then the vtkGlyph3d shall use scalar2 for the mapping. Somehow ... 
> 
> Immo
> 
> 
> On Wednesday 02 Jun 2004 5:49 pm, Mathieu Malaterre wrote:
> 
>>Immo,
>>
>>	I guess you can do a vtkThresholdPoints on scalar2 followed by a
>>vtkGlyph3d on scalar1.
>>
>>HTH
>>Mathieu
>>
>>Immo Trinks wrote:
>>
>>>Hi,
>>>
>>>I have VTK point data (1500 points) with two attributes (scalar1 and
>>>scalar2) assigned to each data point.
>>>
>>>I would like to display the points as spheres that are coloured relative
>>>to scalar1. At the same time, only those spheres shall be visible for
>>>which scalar2 is within a given scalar range. How can this be done?
>>>
>>>Thank you for any help!
>>>Immo
>>>
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> 
> 
>