Yup, that was the issue, it was a simple matter of changing the coordinates of 
my grid to floating point instead of integer.

From: Cory Quammen [mailto:[email protected]]
Sent: April 15, 2015 21:30
To: Greenwood, Michael
Cc: Berk Geveci; [email protected]
Subject: Re: [Paraview] Contours of unstructured grid paraview 3 vs paraview 4

This email explains a bit more detail what I think the problem might be:

http://www.paraview.org/pipermail/paraview/2014-October/032458.html

- Cory

On Wed, Apr 15, 2015 at 6:11 PM, Cory Quammen 
<[email protected]<mailto:[email protected]>> wrote:
Michael,

I remember tracking down a similar bug like this. I recall it had to do with 
the type of the points being specified as an integral type. The change between 
3 and 4 was that interpolation for the isocontours is now performed with the 
precision available in the point type, so if your point type is an integral 
value, you'll get this chunky result.

Try changing your point type in your data file to float or double.

Hope that helps,
Cory

On Wed, Apr 15, 2015 at 4:09 PM, Greenwood, Michael 
<[email protected]<mailto:[email protected]>>
 wrote:
The data file is being held in moderation since its larger size, let me see if 
I can find a place to store it and send a link.

From: ParaView 
[mailto:[email protected]<mailto:[email protected]>] On 
Behalf Of Greenwood, Michael
Sent: April 15, 2015 16:08
To: Berk Geveci
Cc: [email protected]<mailto:[email protected]>
Subject: Re: [Paraview] Contours of unstructured grid paraview 3 vs paraview 4

It seems that in paraview 3 it would interpolate inside the cell between the 
mesh points when building the polymesh for the contour and now it is snapping 
the interpolation to nearest grid point of my unstructured mesh.


From: Berk Geveci [mailto:[email protected]]
Sent: April 15, 2015 15:57
To: Greenwood, Michael
Cc: [email protected]<mailto:[email protected]>
Subject: Re: [Paraview] Contours of unstructured grid paraview 3 vs paraview 4

Very strange. I can't recall a change that can cause this. Do you have a 
dataset that we can reproduce this with?

Best,
-berk

On Wed, Apr 15, 2015 at 3:49 PM, Greenwood, Michael 
<[email protected]<mailto:[email protected]>>
 wrote:
Hi I’ve upgraded to paraview 4 and now when building contours of my 3D 
unstructured grid, the contours are pixelated.  This was not the case in 3, and 
when you look at a slice of the contour overlayed with a slice of the volume 
data it is obvious that the contour in paraview 4 seems to be “hugging” the 
boundaries of my mesh instead of interpolating through it.  How can I get my 
nice smooth contours I had in version 3?

Thanks
[cid:[email protected]]

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--
Cory Quammen
R&D Engineer
Kitware, Inc.



--
Cory Quammen
R&D Engineer
Kitware, Inc.
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