[Paraview] Rescale & axes grid tricks

Mon Oct 23 08:47:07 EDT 2017

Sonya,

ParaView 5.2.0 does have a "Rescale" color map feature. It is circled in
red here:

[image: Inline image 1]

Best regards,
Cory

On Mon, Oct 23, 2017 at 8:09 AM, Sonya Davydycheva <sdavyd at gmail.com> wrote:

> Cory, Alan and all ParaView experts,
>
> I keep playing with two versions of Paraview following your kind advice,
> thanks (see below, on Paraview 5.4.1 error message & freeze).
>
> The earlier versions freeze sometimes as well, but I found a way to
> isolate and avoid the bug (I just avoid making full screen or draw the
> screen edges).
>
> The recommended Paraview 4.4.0 I like the most, since it has button
> "Rescale", which I find very useful: when you do threshold to remove
> extreme values from the view, the picture looses contrast, and you can
> rescale the color again.
>
>  BUT in Paraview 5.2.0 I do not see "Rescale" button. So, after
> "Threshold" all looks grayish & hard to understand what is what.
>
> I then would stick to Paraview 4.4.0, but it has another drawback or a bug:
> when I try to make visible Axas Grid & units, it works with 3D data sets
> and 1D data sets (along one line), but does not work with 2D data sets.
> Namely, it first appears, when I load the file, but after I click Glyph or
> Threshold, the picture emerges, but the Axas Grid & units disapper! With
> 3D/1D data it does not, and you can enjoy seeing your full geometry. But
> not with 2D, and I now mostly work with 2D  data. Paraview 5.2.0 has no
> such problem.
>
> SUMMARY:
> Paraview 5.2.0 allows seeing Axas Grid & units, but does not allow Rescale
> color.
> Paraview 4.4.0 does not allow seeing Axas Grid & units with 2D data, but
> allows Rescale.
>
> Is there a way to enjoy both?
>
> Thank you,
>
> Sonya Davydycheva <http://3demholding.com>
> (713)498-6139
>
>
> On Mon, Oct 9, 2017 at 1:54 PM, Scott, W Alan <wascott at sandia.gov> wrote:
>
>> Sonya,
>>
>> If nothing else works, use ParaView 4.4.0.  That release is a workhorse,
>> and was the version before we updated OpenGL requirements.
>>
>>
>>
>> Alan
>>
>>
>>
>>
>>
>> *From:* ParaView [mailto:paraview-bounces at paraview.org] *On Behalf Of *Sonya
>> Davydycheva
>> *Sent:* Monday, October 9, 2017 9:53 AM
>> *To:* Quammen, Cory (External Contacts) <cory.quammen at kitware.com>
>> *Cc:* ParaView <paraview at paraview.org>
>> *Subject:* [EXTERNAL] Re: [Paraview] Paraview 5.4.1 error message &
>> freeze
>>
>>
>>
>> Hello Cory & Paraview team,
>>
>>
>>
>> I am just giving below a SUMMARY on the errors I encountered while
>> working with ParaView.
>>
>>
>>
>> Version 4.0.1 installed on my old (2013) 64-bit Toshiba laptop under
>> Windows 7: works fine, shows images for model.vtk & glyph for data.vtk;
>> does not freeze.
>>
>>
>>
>> Version 5.4.1 just DOES NOT install on my old (2013) Toshiba laptop.
>>
>>
>>
>> Version 4.0.1 installed on a new (2016) Dell laptop under Windows 7:
>> shows images for model.vtk & glyph for data.vtk, but freezes while
>> attempting to do full screen or just to drug the screen edge in order to
>> increase screen with the following diagnostics:
>>
>> --------------------
>>
>> Output messages
>>
>> QWidget:: repaint: Recursive repaint detected.
>>
>> ---------------------
>>
>>
>>
>> Version 5.4.1 installed on a 2016 Dell laptop under Windows 7: shows
>> images for model.vtk, BUT glyph for data.vtk STAYS EMPTY, and the
>> application ALSO freezes while attempting to do full screen or just to drug
>> the screen edge in order to increase screen, with no diagnostics.
>>
>>
>>
>> - - - - - - -
>>
>> So, for now I have to continue working with version 4.0.1, and it is
>> fine, so far, for the learning purpose. To prevent freezing, I simply avoid
>> to increase screen / full screen.
>>
>>
>>
>> The  version 4.0.1 was my random choice, just the first version I saw
>> available for 64-bit system.
>>
>> Would you recommend for me to try any newer version?
>>
>>
>>
>> Many thanks for your help,
>>
>>
>>
>> Sonya Davydycheva
>>
>>
>>
>>
>>
>> On Wed, Oct 4, 2017 at 7:29 PM, Sonya Davydycheva <sdavyd at gmail.com>
>> wrote:
>>
>> Cory,
>>
>>
>>
>> The Glyph works just fine with my data.vtk and is very useful tool! It
>> was a good advice.
>>
>>
>>
>> As to not-responding and freezing of ParaView: let me accumulate
>> statistics and then I will let you know.
>>
>>
>>
>> I appreciate your help,
>>
>>
>> Sonya Davydycheva
>>
>>
>>
>>
>>
>> On Wed, Oct 4, 2017 at 6:27 PM, Cory Quammen <cory.quammen at kitware.com>
>> wrote:
>>
>> [cc'ing to the paraview mailing list so others may contribute to and
>> benefit from the discussion]
>>
>>
>>
>> On Tue, Oct 3, 2017 at 3:44 PM, Sonya Davydycheva <sdavyd at gmail.com>
>> wrote:
>>
>> Thank you Cory,
>>
>>
>>
>> For your prompt response. Good to know that the message is harmless.
>>
>>
>>
>> My Paraview 5.4.1 just stops responding sometimes.
>>
>>
>>
>> If it stops responding consistently after a specific event or sequence of
>> events, please let us know. It shouldn't do that :-)
>>
>>
>>
>> But, well, I installed on another (older) laptop an older version, 4.0.1
>> (5.4.1 did not work there), and it does not freeze. So far, I think it is
>> ok for my learning purpose.
>>
>>
>>
>> Very good.
>>
>>
>>
>> Both versions (on both computers) allow me to visualize my sample
>> model.vtk file: in RenderView I can do Threshold, Slice and Clip and see
>> some 3D pictures. But something is wrong with my other sample data.vtk file
>> (or, with my approach?). It contains data points (3 coordinates) and the
>> resistivity values assigned to them. When I open it, I can see only the
>> resistivity colorbar, and I can add axes, but the image stays empty.
>>
>> Threshold does not work at all (and even the colorbar disappears when I
>> apply it).
>>
>> Slice somewhat works, but it stays gray/empty and does not change as I
>> move it along the box.
>>
>> And when I am in "Slice" mode, pressing "Apply" removes the colorbar as
>> well, and does not show anything meaningful.
>>
>>
>>
>> Any idea how can I activate Threshold or Slice for my resistivity
>> data.vtk?
>>
>>
>>
>> I am beginner and suspect I just miss something simple...
>>
>> Reading ParaViewGettingStarted-5.4.0.pdf and ParaViewTutorial54.pdf,
>> does not help, so far.
>>
>>
>>
>> I suspect that you do not have any cells in your 3-point data.vtk file.
>> Without cells, there is nothing for ParaView to visualize. This is a common
>> stumbling block for people trying to visualize point data.I suggest after
>> loading your data applying a Glyph filter. It should show you three spheres
>> colored according to your resistivity array. Now you should be able to
>> apply the Threshold and Slice filters as you would expect.
>>
>>
>>
>> Thanks,
>>
>> Cory
>>
>>
>>
>> Many thanks in advance,
>>
>>
>>
>> Best regards,
>>
>>
>> Sonya Davydycheva
>>
>>
>>
>>
>>
>> On Tue, Oct 3, 2017 at 4:12 PM, Cory Quammen <cory.quammen at kitware.com>
>> wrote:
>>
>> On Tue, Oct 3, 2017 at 3:31 PM, Sonya Davydycheva <sdavyd at gmail.com>
>> wrote:
>> > Hello,
>> >
>> > Does anybody know what this Output message mean? (appears when I press
>> > "Example Visuatizations"... thougth, some examples emerge),
>> > ---------
>> > QWindowsWindow::setGeometry: Unable to set geometry 996x403+228+226 on
>> > QWidgetWindow/'pqExampleVisualizationsDialogWindow'. Resulting
>> geometry:
>> > 996x412+228+226 (frame: 9, 36, 9, 9, custom margin: 0, 0, 0, 0, minimum
>> > size: 956x403, maximum size: 16777215x16777215).QWindowsWin
>> dow::setGeometry:
>> > Unable to set geometry 996x403+228+226 on
>> > QWidgetWindow/'pqExampleVisualizationsDialogWindow'. Resulting
>> geometry:
>> > 996x412+228+226 (frame: 9, 36, 9, 9, custom margin: 0, 0, 0, 0, minimum
>> > size: 956x403, maximum size: 16777215x16777215).
>> > ----------
>>
>> The message is a warning from the Qt side. Aside from being annoying,
>> it should be harmless. Sorry, but we haven't figured out why this
>> appears on some systems and not others.
>>
>> > Also, my Paraview 5.4.1 (installed under 64-bit Windows 7, ) often
>> freezes.
>> > I wonder if this can be related to the issue above.
>>
>> Does it stop responding or does it crash? It's probably not related to
>> the warning message above.
>>
>> Cory
>>
>> > Thanks,
>> >
>> > Sonya Davydycheva
>> >
>> >
>> >
>> > _______________________________________________
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>> >
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>> >
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>> >
>>
>> --
>> Cory Quammen
>> Staff R&D Engineer
>> Kitware, Inc.
>>
>>
>>
>>
>>
>>
>>
>> --
>>
>> Cory Quammen
>> Staff R&D Engineer
>> Kitware, Inc.
>>
>>
>>
>>
>>
>
>

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