Thanks Ken. Got it. It makes sense. It seems that the only way to improve the quality is to have a finer grid and a more detailed calculation of the amount of radiation (the previous image included only the direct). New images are at this link
https://www.dropbox.com/s/z9m2nr7ybj5mqqp/finermesh.zip?dl=0 I was wondering whether there was a way to at least smooth the results (see other attached image). I have looked at the filters available, but there is no such thing. When I import these results onto StarCCM I definitely see a smoother interpolation. Thanks Ruggiero On 26 September 2014 19:01, Moreland, Kenneth <[email protected]> wrote: > Yes, ParaView will use the triangles to interpolate values between > points. The interpolation you are getting is exactly as I would expect > based on your data and topology. I'm not sure what you mean by "not > [interpolating] in the x,y directions". The triangles are in the x-y plane > and interpolation is happening in this x-y plane. > > Moving into guesswork, I am imagining that you are expecting a smooth > and fairly straight contour at some distance from the buildings. The > reason you don't see this is due to the representation in your data. I > notice that your data contains only two values for "RadiationOnPerson." The > value is either 0 or 205.7. Presumably there is some contour in space where > this field discontinuously transitions from 0 to 205.7, but there is no way > to accurately predict where that is from the data you are providing. > Instead, ParaView is just linearly interpolating between these values, > which is wrong but probably the best you can do with the data provided. The > problem is made even worse by the irregular sampling of the field. > > -Ken > > From: Ruggiero Guida <[email protected]> > Date: Thursday, September 25, 2014 at 10:44 PM > To: "[email protected]" <[email protected]> > Subject: [EXTERNAL] [Paraview] Fwd: VTK interpolation help > > Dear group, > > I hope I will be able to find an answer to my problem here. > > I am not sure I understand how the interpolation works. I have generated > a VTK file (attached) and I am trying to visualizing it in Paraview. The > data represent the solar radiation on the ground around various buildings. > > My algorithm calculates the radiation in each node of a constrained > delauney triangulation. The plan is to visualize this in paraview to have a > nice smooth fillled contour. > > The image I get though, does not make sense to me; it seems that > paraview is interpolating only within the triangles and not in the x,y > directions. Am I missing something? > > Thanks a lot for any help > Ruggiero > >
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