[Paraview] Selection of Multiple distinct cells/points

[Christian Werner]

I just found out that the desired functionality IS there (multiselect 
with Ctrl). It just doesn't work with the frustum selection. Maybe this 
could be accomplished, too? Anyway I am fine for the moment.

Put together there remains this wishlist:   Selection of cells by 
connectivity (select all cells with same RegionID with one click)
                                                             Multiselect 
with Frustum
                                                             Multiselect 
with new RegionID Selection feature ... :)

Best regards,
Christian


Christian Werner wrote:
> Hi David,
>
> thanks for your suggestion. The Threshold may help in the occluding 
> scenario, but I am mainly looking for a way to extract several objects 
> which might have completely different IDs, e.g. 2,10 and 137. Multiple 
> selection would help here very much! For what I am doing it would 
> perfectly suffice if I could just select one point per object on 
> mulitple objects and only extract those points. Somehow I have the 
> feeling that this was possible in 3.6. I will try that.
>
> Best regards,
> Christian
>
>
> David Doria wrote:
>> On Sat, Mar 27, 2010 at 7:23 PM, Christian Werner 
>> <christian.werner at rwth-aachen.de 
>> <mailto: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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