[Paraview] Threshold

[Mohammad Mirzadeh]

Thanks Alan and Ken,

That's exactly what I was looking for -- never knew we have the ability to
clip by scalars :).

That "IsoVolume" idea is also pretty awesome. Looking forward to use it in
future. Thanks again

Mohammad
On Wed, Jun 16, 2010 at 4:29 PM, Moreland, Kenneth <kmorel at sandia.gov>wrote:

>  In that case, try the clip filter and set the clip function.  If you
> still get the wrong surface, invert it with the Inside Out toggle.
>
> In the next version of ParaView there will be an “Iso Volume” filter that
> will look like the threshold filter but create interpolated cuts between two
> isosurfaces (or the mesh boundary).
>
> -Ken
>
>
>
> On 6/16/10 5:22 PM, "Mohammad Mirzadeh" <mirzadeh at gmail.com> wrote:
>
> Thanks Ken,
>
> I have tried that. The problem is that contour gives exactly the opposite
> surface. That may sound a bit confusing, so let me explain. Suppose I have a
> cube, and I exclude a sphere from it. Now what I want to see is the parts of
> the cube that are outside the sphere. However, if I plot the zero contour of
> my level set, it just draws the sphere which is exactly the opposite of what
> I'm interested in!
>
> On Wed, Jun 16, 2010 at 4:11 PM, Moreland, Kenneth <kmorel at sandia.gov>
> wrote:
>
> Try using the contour filter instead.
>
> -Ken
>
>
>
> On 6/16/10 4:51 PM, "Mohammad Mirzadeh" <mirzadeh at gmail.com <
> http://mirzadeh@gmail.com> > wrote:
>
> Dear all,
>
> I had a question about threshold filter. I am working on complex geometries
> and the way I represent them is to use a level set function. Now when I want
> to see solid part of domain, I just use the threshold filter on the level
> set function and ask for wherever it is positive. The problem that I have
> right now is that threshold filter kinda creates a rasterized bject right at
> the solid-fluid interface. Is there any way you can have a rather smooth
> shape at the interface?
>
> Thanks,
> Mohammad
>
> Graduate Research Assistant,
> Dept. Mech. Eng.,
> University of California Santa Barbara
> CA 93106
>
>
>
>    ****      Kenneth Moreland
>     ***      Sandia National Laboratories
> ***********
> *** *** ***  email: kmorel at sandia.gov <http://kmorel@sandia.gov>
> **  ***  **  phone: (505) 844-8919
>     ***      web:   http://www.cs.unm.edu/~kmorel
>
>
>
>
>
>    ****      Kenneth Moreland
>     ***      Sandia National Laboratories
> ***********
> *** *** ***  email: kmorel at sandia.gov
> **  ***  **  phone: (505) 844-8919
>     ***      web:   http://www.cs.unm.edu/~kmorel
>
>
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