[Paraview] Selection of Multiple distinct cells/points

[David Doria]

On Sat, Mar 27, 2010 at 7:23 PM, Christian Werner <
christian.werner at rwth-aachen.de> wrote:

> Hello!
>
> I like the selection/spreadsheet combination. It helps you analyse your
> data alot. However in my case, I'd like to select several distinct cells in
> the 3D view by pressing the CTRL key, like in the spreadsheet view. This
> would save me a lot of time since I have to manually cut out (or extract the
> invers of) several unwanted objects out of my data.
>
> Also, I would like to know if there is a way to select all cells belonging
> to one object (by connectivity). This would help in situations where
> different objects occlude each other. I have attached an image that explains
> the situation. In this case it is difficult to select the red object - parts
> of the green object which lies behind the red one are selected, too. I have
> data that will yield a lot more different objects. This will make the
> selection pretty hard.
> Multiple selection would already help here, in that I could subsequently
> mark an object's cells from different viewpoints until I have captured it
> completely.
>
> The data is the result a Contour filter with a Connectivity filter applied
> afterwards.
>
> Best regards,
> Christian
>
>
The ctrl+click selection would also help my group quite a bit. We typically
export and use Blender for these operations - it would be nice to stay in
Paraview.


Christian,
The Connectivity filter produces a "RegionId" array. You could use a
Threshold filter on the RegionId to select the object you want. It would be
nice if this could be wrapped into the "select connected object" filter that
you are talking about.

Thanks,

David
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