[Paraview] Contours of unstructured grid paraview 3 vs paraview 4

[Cory Quammen]

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 <cory.quammen at kitware.com>
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 <
> Michael.Greenwood at nrcan-rncan.gc.ca> 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:paraview-bounces at paraview.org] *On Behalf Of *Greenwood,
>> Michael
>> *Sent:* April 15, 2015 16:08
>> *To:* Berk Geveci
>> *Cc:* paraview at paraview.org
>> *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:berk.geveci at kitware.com
>> <berk.geveci at kitware.com>]
>> *Sent:* April 15, 2015 15:57
>> *To:* Greenwood, Michael
>> *Cc:* paraview at paraview.org
>> *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 <
>> Michael.Greenwood at nrcan-rncan.gc.ca> 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
>>
>> [image: cid:image001.png at 01D07796.42933DD0]
>>
>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Please keep messages on-topic and check the ParaView Wiki at:
>> http://paraview.org/Wiki/ParaView
>>
>> Search the list archives at: http://markmail.org/search/?q=ParaView
>>
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/mailman/listinfo/paraview
>>
>>
>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Please keep messages on-topic and check the ParaView Wiki at:
>> http://paraview.org/Wiki/ParaView
>>
>> Search the list archives at: http://markmail.org/search/?q=ParaView
>>
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/mailman/listinfo/paraview
>>
>>
>
>
> --
> Cory Quammen
> R&D Engineer
> Kitware, Inc.
>



-- 
Cory Quammen
R&D Engineer
Kitware, Inc.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/paraview/attachments/20150415/e10523ee/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 62758 bytes
Desc: not available
URL: <http://public.kitware.com/pipermail/paraview/attachments/20150415/e10523ee/attachment.png>