[Paraview] Transform Filter Loses Colors

[Sven Buijssen]

Actually, the loop got accidentally more complicated than necessary:

---
inp = self.GetInput()
out = self.GetOutput()

numCells  = inp.GetNumberOfCells()
data = inp.GetCellData().GetArray("Colors")

newData = vtk.vtkUnsignedCharArray()
newData.SetName('Colors_converted')
newData.SetNumberOfComponents(3)
for i in range(0, 3*numCells):
  val = int(data.GetValue(i))
  newData.InsertNextValue(val)
out.GetCellData().AddArray(newData)
---

Sven


> ----- Original Message -----
> From: David Doria <daviddoria at gmail.com>
> To: ParaView <paraview at paraview.org>
> CC: ParaView <paraview at paraview.org>
> Sent: 09/11/09 17:46:54
> Subject: [Paraview] Transform Filter Loses Colors
>> On Fri, Sep 11, 2009 at 11:40 AM, Utkarsh Ayachit
>> <utkarsh.ayachit at kitware.com <mailto:utkarsh.ayachit at kitware.com>> wrote:
>>
>>     I am not sure why, but the transform filter converts the "Colors"
>>     array from unsigned-char to float. And hence, map-scalars is no longer
>>     available.
>>
>>     Utkarsh
>>
>>
>> So this essentially breaks the coloring right? The colors now appear as
>> shades between blue and red - there is no way to tell Paraview to use
>> float [0,1] RGB coloring? Is the course of action from here to ask the
>> VTK developers why this happens and if it can be specified/changed?
>>
>> Thanks,
>>
>> David
>>
>>
>> ------------------------------------------------------------------------
>>
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