[Paraview] difference of two data sets

2010-04-02 Thread Xunlei Wu
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.

Re: [Paraview] difference of two data sets

2010-04-02 Thread Berk Geveci
Xunlei, Are you trying to do this in parallel? -berk On Fri, Apr 2, 2010 at 10:36 AM, Xunlei Wu xun...@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

Re: [Paraview] difference of two data sets

2010-04-02 Thread Xunlei Wu
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

Re: [Paraview] difference of two data sets

2010-04-02 Thread 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

Re: [Paraview] difference of two data sets

2010-04-02 Thread Xunlei Wu
Hi Berk, I was playing with programmable filter feature. Do you have any tutorial/examples that I can follow? My initial test would be on two structured mesh with the same geometry but different size. So I can skip the delaunay filter. After I am done with the resample filter, how can I compute

Re: [Paraview] difference of two data sets

2010-04-02 Thread Eric E. Monson
Hey Xunlei, So, you probably know that you can just highlight both data sets and then apply the Python Programmable Filter (PPF) and it will take multiple inputs. If you are working from CVS ParaView compiled with Python support and have Numpy installed, you can compare attributes of two data