[Paraview] [EXTERNAL] Unable to rescale properly the color map

Luigi R xluigi84 at hotmail.it
Thu Dec 1 16:51:33 EST 2016


No problem Alan. Thanks for replying. I thought my issue was due to truncation. Anyhow, I had a look at the bug #16978 and, if I can, I would like to give my opinion. When min and max are the same or both zero, I expect as user to see an unique color in the color map either red or blue. If you add an eps to the max and still show the full rgb color map, I would think immediately that there are not enough digit in the label and I would start playing with that or rescaling to find where the differences are.


Best regards,


Luigi


________________________________
Da: Scott, W Alan <wascott at sandia.gov>
Inviato: giovedì 1 dicembre 2016 19.36
A: Luigi R
Oggetto: RE: [EXTERNAL] [Paraview] Unable to rescale properly the color map


Luigi - Since everyone mis-spells my name, and I don't like it, I should have been more careful with yours.



Sorry about that.



Alan







From: Scott, W Alan
Sent: Thursday, December 1, 2016 10:57 AM
To: 'Luigi R' <xluigi84 at hotmail.it>; paraview at paraview.org
Subject: RE: [EXTERNAL] [Paraview] Unable to rescale properly the color map



Lugi,

I am fairly sure you are seeing this bug: https://gitlab.kitware.com/paraview/paraview/issues/16978.  It is scheduled to be fixed in an upcoming release, but the solution isn't trivial.  I will add your example to the bug.

[https://gitlab.kitware.com/uploads/project/avatar/14/pvIcon-512x512.png]<https://gitlab.kitware.com/paraview/paraview/issues/16978>

color legend max wrong for zero (#16978) · Issues · ParaView / ParaView<https://gitlab.kitware.com/paraview/paraview/issues/16978>
gitlab.kitware.com
The color legend is wrong for any data that has a maximum value same as the minimum value. Here is how to replicate. * Local server, Linux, 5.2.0-rc2 * Open...





Alan



From: ParaView [mailto:paraview-bounces at paraview.org] On Behalf Of Luigi R
Sent: Thursday, December 1, 2016 6:39 AM
To: paraview at paraview.org<mailto:paraview at paraview.org>
Subject: [EXTERNAL] [Paraview] Unable to rescale properly the color map



Dear developers,



I'm loading a vtp file in Paraview 5.2 containing the agglomerated mesh and a scalar field (INT32) for the global cellID. The coarsest mesh has few cells characterized by a high identification number (cellID ranges from 1600000 to 1600010]. Paraview is not able to rescale properly the range of the color map even with the custom data range and everything is displayed with a blue color and it becomes useless. Is there a way to change the precision for the color map.



I have also tested the version 5.0.1 which scales better but still cannot go below a certain range.



Please let me know.



Best regards,



Luigi


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