[Paraview] "Select Points on" and nearest point ...

[David E DeMarle]

Select points find vertices, select cells find cells, I believe you
are trying to find data at a specific location within a cell, which is
not necessarily on a vertex.

Try the probe location filter. Activate it, then press p with the
mouse on the point you are interested in, then click accept. This
filter does not need additional render passes like selection does, so
it should be fast.

If you need to process the data you've identified further, you can
manually make a location type selection out of the selected coordinate
(there may be automatic ways to convert that I am not aware of) in the
selection view.

On Thu, Mar 19, 2009 at 1:46 AM, Stefan Melber <Stefan.Melber at dlr.de> wrote:
> Hi Berk,
>>>
>>> using the button "select points on" i can drag up a rectangle to select
>>> some. But sometimes it would be nice by clicking on e.g. a surface to
>>> find
>>> the nearest point around - in fieldview for example i have to press to
>>> cntl-key to do this.
>>>
>>
>> Using the point selection mode, you should be able to click to select
>> 1 point. Doesn't this work?
>>
>
> This works if the point is nearby. If i click e.g. in the middle of a
> triangle of medium size (unstructured mesh) it does not select a point. The
> problem is: exploring a solution i am not interested in the points but in
> the flow field and so normally i do not show the points but a e.g. a cut
> with a scalar. There i would like to get information about this scalar ...
>
>>
>>>
>>> And: every time selection points the update of the graphic window takes
>>> some
>>> time. Is there a speed up?
>>>
>>
>> How slow? How big is the geometry that is being rendered?
>>
>
> The case has about 20e6 points and there is only a cut visible. Rendering
> the clicked point it takes about 5 secs ...
>
> Regards,
>
>   Stefan
>>
>> -berk
>>
>>
>
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-- 
David E DeMarle
Kitware, Inc.
R&D Engineer
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Clifton Park, NY 12065-8662
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