[vtkusers] vtkProjectedTetrahedraMapper to map one component only

Wed Apr 4 03:57:28 EDT 2018

Hi,

So that would involve creating a custom array, filling it with the extracted data, adding it to the unstructured grid and setting the active array?

Thank you - that certainly solves my problem. 

However, I felt like there should exist a solution where extracting data to a designated array is not necessary as classes like vtkColorTransferFunction already offer the functionality to set individual vector components. 
This functionality seems to be ignored by the vtkProjectedTetrahedraMapper so I wonder if I missed out on something. 
I would prefer such a solution to adding an array to the unstructured grid because I also want to export the unstructured grid and modifying the original would complicate the export process since those changes need to be reversed.

Kind regards,
Bertram

-----Original Message-----
From: vtkusers [mailto:vtkusers-bounces at vtk.org] On Behalf Of ZACK
Sent: 30 March 2018 22:15
To: vtkusers at vtk.org
Subject: Re: [vtkusers] vtkProjectedTetrahedraMapper to map one component only

Hi Bertram,

I have unstructured grid vector plot and each point has xfield, yfield and z field values.You can accomplish what you're looking for by giving the user the option to plot X,Y,Z,XY,XZ,YZ or XYZ components

Depending on user selection you can just compute the magnitude of selected
component(s) and set the scalar values accordingly for contour plot or just use InsertNextTuple3(xfield,yfield, zfield) for vector plot

Regards

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