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

[Magician]

Hi Luigi,


I have the same problem when I display color contours with UNIX Timestamps.

The instant solution is using Calculator filter.
Subtract 1600000 from CellIDs, you may get correct results.

# Of course I want to be fixed the problem about the precision of contour ranges, too.


Magician


> On Dec 3, 2016, at 02:00, paraview-request at paraview.org wrote:
> 
> Message: 13
> Date: Thu, 1 Dec 2016 21:51:33 +0000
> From: Luigi R <xluigi84 at hotmail.it>
> To: "Scott, W Alan" <wascott at sandia.gov>, "paraview at paraview.org"
> 	<paraview at paraview.org>
> Subject: Re: [Paraview] [EXTERNAL] Unable to rescale properly the
> 	color map
> Message-ID:
> 	<DB5PR04MB2088170BEBF0512FD5532547B98F0 at DB5PR04MB2088.eurprd04.prod.outlook.com>
> 	
> Content-Type: text/plain; charset="iso-8859-1"
> 
> 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: gioved? 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