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 <wasc...@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' <xluig...@hotmail.it>; paraview@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-boun...@paraview.org] On Behalf Of Luigi R
Sent: Thursday, December 1, 2016 6:39 AM
To: paraview@paraview.org<mailto:paraview@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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