Hi David,
You can use a Programmable Filter to convert the data back to unsigned char to
work around the problem for now:
---
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, 3):
val1 = int(data.GetValue(i))
val2 = int(data.GetValue(i+1))
val3 = int(data.GetValue(i+2))
newData.InsertNextValue(val1)
newData.InsertNextValue(val2)
newData.InsertNextValue(val3)
out.GetCellData().AddArray(newData)
---
Sven
----- Original Message -----
From: David Doria <daviddo...@gmail.com>
To: ParaView <paraview@paraview.org>
CC: ParaView <paraview@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.ayac...@kitware.com <mailto:utkarsh.ayac...@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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