that is indeed annoying, and would be very nice to be able to save the opacity table. A work around is use a state file. The opacity tables will be saved/restored. note: 4.2 has a bug in state file loading re: time. depending on your scenario you may need to use 4.1.

On 11/07/2014 08:33 AM, Anderson, Lawrence S. wrote:
thanks for the attention!  I should also point out that i have tried the import/export 
options on the color table editing feature- opacity is not preserved.  i.e. when i export 
a table to an xml file, the opacities all revert to 1.0, and when i import an xml file, 
any ' o="x.xx" ' value is ignored, and whatever opacity function in the editor 
from previous work is applied instead.
cheers-
-lawrence a.

________________________________________
From: Utkarsh Ayachit [[email protected]]
Sent: Friday, November 07, 2014 9:01 AM
To: Anderson, Lawrence S.; Aashish Chaudhary
Cc: [email protected]
Subject: Re: [Paraview] volume color transfer table.

To the best of my knowledge, the current volume mappers in
VTK/ParaView need to use a color/opacity transfer functions. Aashish,
is that changing with the new volume rendering code?

Utkarsh

On Wed, Nov 5, 2014 at 3:12 PM, Anderson, Lawrence S.
<[email protected]> wrote:
hi-  i have seen this question on various blogs, but not the answer in a
usable form for me...
i provide project data to paraview via vtk legacy files in ascii.  the
default color mapping functions provided by paraview do not decouple opacity
from color, so i am providing my own look_up table of RGBa values organized
in such a way that i can apply different opacities to the same color, and
different colors to the same opacity.  it works for surface rendering, but
not for volume rendering- i.e. when choosing the volume option, the
rendering reverts back to one of the default tables.  how do i apply my
scalar color table in the vtk file to volumes?
i could laboriously enter 120x4 values into the paraview mapping editor, but
that seems silly...
thank you!
and as i am new to paraview and this list mail option, feel free to refer me
to an old post.
-lawrence anderson, university of toledo



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