[Paraview] difference of two data sets

[Berk Geveci]

The best way that I can think of doing this is to map the particle
data onto the structured mesh and then use the programmable filter to
compute the difference on the mesh. Have you thought about how that
would be done? You can use the delaunay filter to first create an
unstructured mesh from the particle data and then use the resample
filter to map that onto the structured mesh. That would obviously make
certain assumptions about how the field represented by the particles
is interpolated. The alternative is to use the closest point. What do
you think?

2010/4/2 Xunlei Wu <xunlei at renci.org>:
> Hi Berk,
> Ideally, I would like to have pvserver in the back to handle large scale
> data sets. But for now, speed is not an issue. And I know how to do
> multiview to show two data sets side-by-side with linked camera. I
> currently do not have the difference between data sets pre-computed, and
> would like to use some ParaView features to handle that.
> Thanks for your help.
>
> Best,
> x
>
> On 4/2/2010 10:56 AM, Berk Geveci wrote:
>> Xunlei,
>>
>> Are you trying to do this in parallel?
>>
>> -berk
>>
>> On Fri, Apr 2, 2010 at 10:36 AM, Xunlei Wu <xunlei at renci.org> wrote:
>>
>>> Hi All,
>>> I want to visualize the difference between two data sets and plot the
>>> error on one data set as the reference. Currently, I have 2 structured
>>> grid data sets of the same gemoetry; and 2 unstructured point cloud data
>>> sets.
>>> Are there any filters in ParaView for this purpose? Thanks a lot.
>>>
>>> Best,
>>> xunlei
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