[Paraview] Multiblock dataset, ghost nodes and problem with rendering contours with opacity

[Sebastien Jourdain]

Hi Mohamad,

Did you add a data array "GhostLevels" to specify for each cell its
ghost level ?
It's an unsigned char data array where the values are the depth into
the next block for of each cell.
By that I mean:
- 0 is the cells of the current block
- 1 is the set of cells that share points in the current block and the
neighbor one.

Seb

On Sun, Feb 6, 2011 at 12:30 PM, Mohamad M. Nasr-Azadani
<mmnasr at gmail.com> wrote:
> Hey experts,
> I am using several *.vtr files (as subblocks of the entire domain) and then
> use pvd file to load them in paraview.
> As I have read in the manual, one needs to use at least one layer of ghost
> nodes on each subblock so that paraview can perform operations on any given
> dataset of that kind.
> So far, everything is fine. However, the problem that I have is very simple
> yet annoying. When I use contours to represent the isosurface and then any
> opacity value less than 1.0, I can see the boundaries of each subblock on
> the contour surface. I have not been successful to fix this problem yet.
> Any ideas on how to solve this issue?
> Thanks,
> Mohamad
> PS: Attached, please find one snapshot of the contours + the annoying line
> appreaing on the isosurface.
>
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