[Paraview] [EXTERNAL] Re: Bug in contour filter for version 3.12 not present in 3.10

[David E DeMarle]

I don't see that behavior.
wavelet->elevation->clip->contour

Regardless of which array I contour by or how many offsets I use, I
see both Elevation and RTData in the information tab and can color by
either one.

David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909



On Tue, Jan 31, 2012 at 12:09 PM, Russell M. Taylor II
<taylorr at cs.unc.edu> wrote:
> It turns out that the contour is computing scalars for all of the scalars
> except the one that it contoured on.  If you only make one contour, then you
> might say that this is not an issue, but when you make multiple contours
> with the same filter you may want to color them by the value used to make
> the contour.  In version 3.10, it would also compute the scalar for the
> value you contoured by when you clicked the button.
>
> So I guess the bug is that 3.12 does not pass through the scalar value for
> the scalar you contoured by.  If it did that, then we'd not need to push the
> button.
>
> Thanks,
> Russ
>
>
> At 05:45 PM 1/30/2012, Moreland, Kenneth wrote:
>>
>> I believe this change is intentional.  When you run the clip filter, it
>> turns the data set into an unstructured grid.  The unstructured version of
>> contour always computes scalars, so that checkbox has no effect.  To
>> demonstrate that the checkbox has no effect, it is now grayed out.
>>
>>
>> -Ken
>>
>> On 1/30/12 2:17 PM, "David E DeMarle" <dave.demarle at kitware.com> wrote:
>>
>> >I see it too. I'll add it to the bug tracker.
>> >
>> >David E DeMarle
>> >Kitware, Inc.
>> >R&D Engineer
>> >21 Corporate Drive
>> >Clifton Park, NY 12065-8662
>> >Phone: 518-881-4909
>> >
>> >
>> >
>> >On Fri, Jan 27, 2012 at 4:42 PM, Russell M. Taylor II
>> ><taylorr at cs.unc.edu> wrote:
>> >> Paraview 3.12 doesn't let me check the "Compute Scalars" box, it is
>> >>grayed
>> >> out, in some circumstances.
>> >>
>> >> Sources/Wavelet
>> >> FIlters/Clip
>> >> Filter/Contour
>> >>
>> >> The above sequence will give you the situation I am talking about.
>> >>Version
>> >> 3.10 of Paraview and earlier let you compute scalars.  If you can't,
>> >>then
>> >> you can't color by the scalar value (this is useful in the case of
>> >>multiple
>> >> contours).
>> >>
>> >>
>> >> ---
>> >> Russell M. Taylor II, Ph.D.
>> >> taylorr at cs.unc.edu
>> >> CB #3175, Sitterson Hall                        www.cs.unc.edu/~taylorr
>> >> University of North Carolina,                     Voice: (919) 962-1701
>> >> Chapel Hill, NC 27599-3175                        FAX:   (919) 962-1799
>> >> _______________________________________________
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>
>
> ---
> Russell M. Taylor II, Ph.D.                           taylorr at cs.unc.edu
> CB #3175, Sitterson Hall                        www.cs.unc.edu/~taylorr
> University of North Carolina,                     Voice: (919) 962-1701
> Chapel Hill, NC 27599-3175                        FAX:   (919) 962-1799