Hi and excuse me for late reply, I tried the "Clean to grid" filter and it seems that problems has been solved. But I noticed that the data was coming from a finite element method using P1-discontinuous Triangular elements. And it looks for me the problem is somehow related to that.
But as a general question Can paraview show P1-discontinuous data? then for each node in mesh we have several values. But I think vtk format accepts only one value for each noed. Regards, Ali On Thu, Oct 6, 2011 at 10:34 AM, Moreland, Kenneth <[email protected]>wrote: > For starters, the going to infinity thing in the plot is weird. There > should just be gaps in the curve. You may have hit a bug. > > As far as why you are getting nans in the first place I'm not sure. I can't > really tell from your screenshots, but it looks your geometry might be a > bunch of polygons on a plane. Is that the case? If so, make sure that all z > coordinates are zero. If all the coordinates in pone dimension are exactly > the same, then I would expect it to work. Otherwise the line will not be > completely on it. > > If that is not the case, another problem could be with your topology. The > find cell method could fail if your mesh is not fully connected. For > example, if you have repeated coincident points, then VTK won't be able to > find neighbors and trace to a cell. Try running one of the clean filter on > the data. I think that should fix the problem. I think there are some corner > cases where even that might not work, but your mesh looks like it has good > quality triangles or tetrahedra, so that seems unlikely unless you have > degenerate cells or gaps I cannot see. > > -Ken > > > *From*: ali rostai [mailto:[email protected]] > *Sent*: Thursday, October 06, 2011 08:12 AM > *To*: Moreland, Kenneth; [email protected] <[email protected]> > *Subject*: Re: [Paraview] confused with getting nan values in plot over > line > > Hi, > > I tried and tried to move the start and end of line inside the domain. > Actually I see two lines going to infinity (nan) in xyplot pane now! > (screen shot attached) > > Regards, > Ali > > On Thu, Oct 6, 2011 at 5:08 AM, Moreland, Kenneth <[email protected]>wrote: > >> Like I said previously, it looks like the line you define is right on the >> boarder of your volume. Try moving the line slightly more inside the volume. >> >> -Ken >> >
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