Re: [Paraview] ParaView 5.2 Release Candidate 1 available for download

[Gena Bug via ParaView]

Hi!

I've just tried the 5.2rc and noticed this in the console:

$ Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 
72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 
72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 
80: saw unknown, expected number


And a fontconfig folder is created in the run directory with a bunch of 
cache-files.


$ cat /etc/fonts/conf.d/10-scale-bitmap-fonts.conf:
...
64  
65
66  matrix
67  
68pixelsizefixupfactor
690.0
700.0
71pixelsizefixupfactor
72   
73
74  
75  
76
77  size
78  pixelsizefixupfactor
79
80  
81 
   ...

OS: Debian testing amd64

Not sure this is the problem of PV but it's not happening with 5.1.2 
version.


On 11.10.2016 16:50, Cory Quammen wrote:

On behalf of the ParaView development team, I am pleased to announce
that ParaView 5.2 Release Candidate 1 binaries and source tarballs are
now available for download at

http://www.paraview.org/download/

Please let us know if you encounter any problems with this release candidate.

Thanks,
Cory


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[Paraview] How to use the plugin Geodesic Measurement

[Salazar De Troya, Miguel]

Hello

I loaded the Geodesic Measurement plugin with the Plugin Manager, but I do not 
know how to use it. I see it as a filter option, but it is disabled even for 
point-based data. I haven’t been able to find an example either. I am 
interested in finding the shortest path between two points in a surface.

Thanks
MIguel

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Re: [Paraview] Building ParaView v5.1.2 on Linux from source with support for GPU and SWR.

[Albina, Frank]

Chuck,
thank you very much for the info. This is most useful.
Frank.
From: Chuck Atkins [mailto:chuck.atk...@kitware.com]
Sent: Dienstag, 11. Oktober 2016 21:28
To: Albina, Frank
Subject: Re: [Paraview] Building ParaView v5.1.2 on Linux from source with 
support for GPU and SWR.


b)Use the configuration option paraview_FROM_GIT:BOOL=ON to check out the 
latest paraview sources (which will be 5.2.0 RC1)
Almost.  Setting paraview_FROM_GIT=ON will use the latest paraview sources 
which is the git master branch and a few commits ahead of RC1.  The sb has been 
updated to use the RC1 source tarball so if you set paraview_FROM_GIT=OFF then 
you'll get the source for 5.2.0-RC1.  So FROM_GIT=OFF gives you 5.2.0-RC1 and 
FROM_GIT=On gives you whatever is in master, which right now is 
"v5.2.0-RC1-7-g52f2ad6" which means 7 commits past RC1.



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[Paraview] 3D with Nvidia glasses

[Gao]

Hi all,

I am trying to make the stereo 3D working on Paraview but it doesn't 
work. I don't know what is the problem.


I got NVIDIA 3D VISION 2 glasses and set it up on my Windows 10 PC. 
Installed the driver for the QUADRO 4000 card. Tested with the Nvidia 
Control Panel (version  8.1.1030.0) and the I can see the 3D demo 
through the glasses.


Then I downloaded a sample vtk file from here:

http://www.subdude-site.com/WebPages_Local/RefInfo/Computer/Linux/LinuxGuidesByBlaze/apps3Dtools/3D_viewers-converters/3Dtestfiles/vtk/rbc_001.vtk

I changed some setting on Nvidia Control Panel:
Manage 3D setting:
 Stereo - Display mode : Generic active stereo (with NVIDIA 3D Vision)
 Stereo -Enable: On
 Stereo -Swap eyes: Off

Now I run paraview with：
paraview.exe --stereo --stereo-type="Crystal Eyes"

Then I open the vtk file I downloaded. I don't see 3D, and the image is 
flickering. But the emitter green light is ON.


Can someone help me to get this 3D display going?

Thanks.

Gao


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Re: [Paraview] Can't export to vector graphics in ParaView 5.0

[David Lonie]

On Tue, Oct 11, 2016 at 2:54 PM, Nicolás Guarín-Zapata  wrote:

> It might be known in the mailing list. But it is not written in the wiki
>
> http://www.paraview.org/Wiki/ParaView/Vector_Graphics_Export


Updated.
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Re: [Paraview] Can't export to vector graphics in ParaView 5.0

[Nicolás Guarín-Zapata]

It might be known in the mailing list. But it is not written in the wiki

http://www.paraview.org/Wiki/ParaView/Vector_Graphics_Export

or in the Guide. So I don't think that it was that obvious.

Thanks for the reply, I will update it in my office as well then.

On Tue, Oct 11, 2016 at 2:44 PM, David E DeMarle
 wrote:
> Yes that is known.
>
> SVG output was temporarily lost in the initial transition to OpenGL"2"
> rendering back around 5.0.
> I think it returned before 5.1.
>
> Note also that if you built 5.0 from source but choose the OpenGL"1" backend
> instead of the then newly default OpenGL"2" you would also have it.
>
>
>
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
> On Tue, Oct 11, 2016 at 2:05 PM, Nicolás Guarín-Zapata
>  wrote:
>>
>> Hello,
>>
>> In my laptop with Windows 10, ParaView 5.0 can't export to vector graphics
>> formats. You can see a screenshot here:
>>
>> https://twitter.com/nicoguaro/status/785890202166321152?s=09
>>
>> Nevertheless, I just downloaded and installed version 5.2 RC1 and the
>> options appear. Is this a known problem?
>>
>> Thanks,
>> Nicolás
>>
>>
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>



-- 
Nicolás Guarín-Zapata
PhD Student - Purdue University
Computational Multi-Scale Material Modeling Lab
https://engineering.purdue.edu/~zavattie/

Linux user #514760
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Re: [Paraview] Can't export to vector graphics in ParaView 5.0

[David Lonie]

The GL2PS library that we use to generate the vector exports didn't support
our new rendering backend, so there was a brief period of time where
VTK/ParaView applications using the OpenGL2 backend had to have the vector
graphics export disabled. This included the 5.0 release. Since then we've
modified GL2PS to work around some of these issues and new versions of
ParaView have restored support for it.

HTH,
Dave

On Tue, Oct 11, 2016 at 2:05 PM, Nicolás Guarín-Zapata  wrote:

> Hello,
>
> In my laptop with Windows 10, ParaView 5.0 can't export to vector graphics
> formats. You can see a screenshot here:
>
> https://twitter.com/nicoguaro/status/785890202166321152?s=09
>
> Nevertheless, I just downloaded and installed version 5.2 RC1 and the
> options appear. Is this a known problem?
>
> Thanks,
> Nicolás
>
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> opensource/opensource.html
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> http://paraview.org/Wiki/ParaView
>
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>
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Re: [Paraview] Can't export to vector graphics in ParaView 5.0

[David E DeMarle]

Yes that is known.

SVG output was temporarily lost in the initial transition to OpenGL"2"
rendering back around 5.0.
I think it returned before 5.1.

Note also that if you built 5.0 from source but choose the OpenGL"1"
backend instead of the then newly default OpenGL"2" you would also have it.




David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Tue, Oct 11, 2016 at 2:05 PM, Nicolás Guarín-Zapata  wrote:

> Hello,
>
> In my laptop with Windows 10, ParaView 5.0 can't export to vector graphics
> formats. You can see a screenshot here:
>
> https://twitter.com/nicoguaro/status/785890202166321152?s=09
>
> Nevertheless, I just downloaded and installed version 5.2 RC1 and the
> options appear. Is this a known problem?
>
> Thanks,
> Nicolás
>
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> http://paraview.org/Wiki/ParaView
>
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>
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>
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Re: [Paraview] Building ParaView v5.1.2 on Linux from source with support for GPU and SWR.

[Chuck Atkins]

Hi Frank,

I tracked down the problem.  The way the superbuild was calling ./configure
for mesa was causing the default -O2 flags set by mesa's ./configure to get
dropped, thus resulting in an unoptimized mesa build.  I just merged a fix
for both issues into the superbuild.

--
Chuck Atkins
Staff R&D Engineer, Scientific Computing
Kitware, Inc.


On Fri, Oct 7, 2016 at 4:39 PM, Chuck Atkins 
wrote:

> which are not copied into the archive when packing the binaries using:
>>> “ctest -V -R cpack-paraviewsdk-TGZ”
>>>
>>
>> This should have been fixed a while ago.  I'll try to reproduce it and
>> make sure the packaging is correct.
>>
>
> I see the same problem.  I have a fix for the packaging and will get it up
> shortly.  It probably won't make it for the RC tonight but it will be fixed
> before the release.
>
>
> 4. Compared to the ParaView v5.1.2 binary for Linux, the compiled
>>> version with mesa v12.0.3 is substantially slower than with the OpenSWR
>>> version shipped with the binary.
>>>
>> That certainly should not be the case.
>>
>
> The good news is that I was just able to reproduce the problem.  Even
> better I could isolate it to the mesa build from the superbuild.  Swapping
> out the mesa libs in the release binary on the web site, on a single
> 14-Core Haswell CPU I see a difference of 25MiPolys / sec with the
> superbuild libraries vs 118MiPolys / sec with the website binaries.
> That's roughly a 4.5x performance difference, i.e. not good.  I don't know
> yet if it's a mesa problem or how we build it.  I'll dig deeper and let you
> know.
>
> Thanks for the bug!
>
> - Chuck
>
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[Paraview] vtkTableAlgorithm

[Dean, Kevin]

I am currently trying to compose a plugin that updates a 2D histogram of my
data. I was wondering if vtkTableAlgorithm is the base that I should use?

Kevin

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[Paraview] Can't export to vector graphics in ParaView 5.0

[Nicolás Guarín-Zapata]

Hello,

In my laptop with Windows 10, ParaView 5.0 can't export to vector graphics
formats. You can see a screenshot here:

https://twitter.com/nicoguaro/status/785890202166321152?s=09

Nevertheless, I just downloaded and installed version 5.2 RC1 and the
options appear. Is this a known problem?

Thanks,
Nicolás
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Re: [Paraview] bug report: xdmf AttributeType handling error

[Chen Zhang]

Hi Armin,

I am using the v2.2 version of Xdmf, which is the default output xdmf version 
used by paraview 5.2

Thanks,
Chenz


> On Oct 11, 2016, at 1:57 PM, Armin Wehrfritz  wrote:
> 
> Hi Chenz,
> 
> without commenting further on your problem, could you tell which Xdmf
> version you are using. ParaView comes currently with two Xdmf
> implementations called "Xdmf" and "Xdmf3". Which one did you use for
> reading/writing your dataset?
> 
> -Armin
> 
> 
> 
> On 10/11/2016 07:32 PM, Chen Zhang wrote:
>> Hi,
>> 
>> I recently noticed a strange error in xdmf reading. If a multi-demension 
>> array (e.g. 32x32x32x24 ) is exported to Xdmf format by paraview, it will 
>> generate something like this:
>> 
>> > Center="Cell">
>>  > Format="HDF">test.h5:/Block_0_t00/Cell/resistance_slip
>> 
>> 
>> Although the original data is a 24 length vector for each cell, Paraview is 
>> only interpolating it as a simple scalar, thus break the data structure. 
>> This error can not be resolved by manually switching AttributeType to 
>> “Matrix”, which indicates the “Matrix” type of support is somehow missing at 
>> the moment.
>> 
>> I am currently running the Paraview 5.2.0-RC1 on a MacBook pro (mid 2012) 
>> running macOS Sierra.
>> 
>> cheers,
>> Chenz
>> 
>> 
>> 
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Re: [Paraview] bug report: xdmf AttributeType handling error

[Armin Wehrfritz]

Hi Chenz,

without commenting further on your problem, could you tell which Xdmf
version you are using. ParaView comes currently with two Xdmf
implementations called "Xdmf" and "Xdmf3". Which one did you use for
reading/writing your dataset?

-Armin



On 10/11/2016 07:32 PM, Chen Zhang wrote:

Hi,

I recently noticed a strange error in xdmf reading. If a multi-demension array 
(e.g. 32x32x32x24 ) is exported to Xdmf format by paraview, it will generate 
something like this:


  test.h5:/Block_0_t00/Cell/resistance_slip
 

Although the original data is a 24 length vector for each cell, Paraview is 
only interpolating it as a simple scalar, thus break the data structure. This 
error can not be resolved by manually switching AttributeType to “Matrix”, 
which indicates the “Matrix” type of support is somehow missing at the moment.

I am currently running the Paraview 5.2.0-RC1 on a MacBook pro (mid 2012) 
running macOS Sierra.

cheers,
Chenz



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Re: [Paraview] [EXTERNAL] Re: create a time sequence from a steady-state vector

[Scott, W Alan]

There is also an example of a programmable filter with eigenvalues on the 
tutorial page here:  
http://www.paraview.org/Wiki/Python_calculator_and_programmable_filter.  
Towards the bottom is a link to principleStrainPython.  

Hope that helps.

Alan




On 10/11/16, 9:46 AM, "ParaView on behalf of Utkarsh Ayachit" 
 wrote:

>Using "Programmable Source" or "Prorgammable Filter" may be the best
>approach. Chapter 13 in the ParaView Guide covers a great deal of how
>programmable filter/source work. Give it a quick read and let me know
>if you need any assistance.
>
>Utkarsh
>
>On Tue, Oct 11, 2016 at 5:31 AM, Juan Carlos Araujo Cabarcas
> wrote:
>> Hi, I have been working with eigenstates of the wave equation and I would
>> like to make
>> videos of a time evolution. I have vectors of the form u(x,y) and I want to
>> simply compute:
>>
>> Y(x,y,t) = u(x,y)*cos(t), for various values of t. (or any other function of
>> t)
>>
>> The naĩve way of doing this (which is very expensive) is to compute
>> Y1(x,y,t1), Y2(x,y,t2), ... Yn(x,y,tn) and add them into the final .vtk file
>> by adding the time in the vector label.
>>
>> The vector u(x,y) is around 5 Mb, then by adding 100 time steps it becomes a
>> very big file!
>>
>> I guess that it should be possible to do the same in a clever way by using
>> u(x,y) and passing the operation u(x,y)*cos(t) to paraview in order to
>> obtain the evolution/movie, but I have not been able to see how to do this
>> in the manual or email list.
>>
>> Any thoughts? ... I would like this idea to work in both, the desktop and
>> web-based versions of paraview.
>>
>> Kind regards,
>>
>> Juan Carlos Araújo-Cabarcas.
>> Doktorand, Umeå Universitet
>>
>>  "None of us is as clever as all of us" ... Japanese proverb
>>
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[Paraview] bug report: xdmf AttributeType handling error

[Chen Zhang]

Hi, 

I recently noticed a strange error in xdmf reading. If a multi-demension array 
(e.g. 32x32x32x24 ) is exported to Xdmf format by paraview, it will generate 
something like this:


  test.h5:/Block_0_t00/Cell/resistance_slip
 

Although the original data is a 24 length vector for each cell, Paraview is 
only interpolating it as a simple scalar, thus break the data structure. This 
error can not be resolved by manually switching AttributeType to “Matrix”, 
which indicates the “Matrix” type of support is somehow missing at the moment.

I am currently running the Paraview 5.2.0-RC1 on a MacBook pro (mid 2012) 
running macOS Sierra. 

cheers, 
Chenz



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Re: [Paraview] create a time sequence from a steady-state vector

[Utkarsh Ayachit]

Using "Programmable Source" or "Prorgammable Filter" may be the best
approach. Chapter 13 in the ParaView Guide covers a great deal of how
programmable filter/source work. Give it a quick read and let me know
if you need any assistance.

Utkarsh

On Tue, Oct 11, 2016 at 5:31 AM, Juan Carlos Araujo Cabarcas
 wrote:
> Hi, I have been working with eigenstates of the wave equation and I would
> like to make
> videos of a time evolution. I have vectors of the form u(x,y) and I want to
> simply compute:
>
> Y(x,y,t) = u(x,y)*cos(t), for various values of t. (or any other function of
> t)
>
> The naĩve way of doing this (which is very expensive) is to compute
> Y1(x,y,t1), Y2(x,y,t2), ... Yn(x,y,tn) and add them into the final .vtk file
> by adding the time in the vector label.
>
> The vector u(x,y) is around 5 Mb, then by adding 100 time steps it becomes a
> very big file!
>
> I guess that it should be possible to do the same in a clever way by using
> u(x,y) and passing the operation u(x,y)*cos(t) to paraview in order to
> obtain the evolution/movie, but I have not been able to see how to do this
> in the manual or email list.
>
> Any thoughts? ... I would like this idea to work in both, the desktop and
> web-based versions of paraview.
>
> Kind regards,
>
> Juan Carlos Araújo-Cabarcas.
> Doktorand, Umeå Universitet
>
>  "None of us is as clever as all of us" ... Japanese proverb
>
> ___
> Powered by www.kitware.com
>
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>
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>
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[Paraview] What is LIBPROJ_USE_THREAD for?

[SeongMo Yeon]

I am working on RHEL 6 and pthread is installed in /usr/lib and /usr/lib64.

for Paraview 5.1.2, cmake complains it cannot find thread with 
LIBPROJ_USE_THREAD ON and failed configurgation.


After LIBPROJ_USE_THREAD OFF, configuration is finished with success.

I want to know what LIBPROJ_USE_THREAD is for and if paraview can work 
with OpenMP or TBB with LIBPROJ_USE_THREAD OFF



Thanks in advance.

--
Seong Mo Yeon
IIHR - Hydroscience & Engineering
College of Engineering, University of Iowa
Iowa City, IA 52242 USA

E-mail : seongmo.y...@gmail.com
Tel :

Fluctuat nec mergitur

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Re: [Paraview] Differences between OpenGL and OpenGL2 versions of ParaView

[Adam Lyon]

Hi Ken - Wow - that's awesome! Thanks very much! If I build ParaView from
the master branch of GitLab, will I get these changes? If so, I can try it
and let you know what I see. Thanks again! -- Adam
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Re: [Paraview] [Paraview-developers] ParaView 5.2 Release Candidate 1 available for download

[Utkarsh Ayachit]

Folks,

Among several new features, this release includes anti-aliasing
support [1]. Currently, it's off by default. I'd encourage all testers
and early adopters to turn it on and report any issues you notice. If
we don't hear of any major obstacles, we would anti-aliasing on my
default in the final release (or subsequent RCs)

Utkarsh

[1] https://blog.kitware.com/new-fxaa-anti-aliasing-option-in-paraviewvtk/


On Tue, Oct 11, 2016 at 9:50 AM, Cory Quammen  wrote:
> On behalf of the ParaView development team, I am pleased to announce
> that ParaView 5.2 Release Candidate 1 binaries and source tarballs are
> now available for download at
>
> http://www.paraview.org/download/
>
> Please let us know if you encounter any problems with this release candidate.
>
> Thanks,
> Cory
>
> --
> Cory Quammen
> Staff R&D Engineer
> Kitware, Inc.
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Re: [Paraview] Differences between OpenGL and OpenGL2 versions of ParaView

[Adam Lyon]

Even better! Thanks! -- Adam
*--*

*Adam L. Lyon*
*Scientist; Associate Division Head for Systems for Scientific Applications*

Scientific Computing Division & Muon g-2 Experiment
Fermi National Accelerator Laboratory
630 840 5522 office
www.fnal.gov
l...@fnal.gov

Connect with us!
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On Tue, Oct 11, 2016 at 10:01 AM Utkarsh Ayachit <
utkarsh.ayac...@kitware.com> wrote:

> Adam,
>
> You should be able to use the latest 5.2-RC1 binaries to test Ken's
> performance improvements out.
>
> Utkarsh
>
> On Tue, Oct 11, 2016 at 10:58 AM, Adam Lyon  wrote:
> > Hi Ken - Wow - that's awesome! Thanks very much! If I build ParaView from
> > the master branch of GitLab, will I get these changes? If so, I can try
> it
> > and let you know what I see. Thanks again! -- Adam
>
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Re: [Paraview] Differences between OpenGL and OpenGL2 versions of ParaView

[Utkarsh Ayachit]

Adam,

You should be able to use the latest 5.2-RC1 binaries to test Ken's
performance improvements out.

Utkarsh

On Tue, Oct 11, 2016 at 10:58 AM, Adam Lyon  wrote:
> Hi Ken - Wow - that's awesome! Thanks very much! If I build ParaView from
> the master branch of GitLab, will I get these changes? If so, I can try it
> and let you know what I see. Thanks again! -- Adam
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Re: [Paraview] Differences between OpenGL and OpenGL2 versions of ParaView

[Ken Martin]

I finally did get around to this issue and have completely reworked the
CompositePolyDataMapper2 for the OpenGL2 backend. Now there is only the
fast path and your original dataset ***should*** render quickly with
OpenGL2. These changes were merged into VTK last week and hopefully most of
the kinks have been worked out. In terms of benchmarks I did some testing
and with the recent changes I made these are the numbers I am seeing for
six different test cases on an nvidia based laptop GPU.

Thanks!
Ken


OpenGL1 versus 2 CompositePolyDataMapper2
OpenGL1 New OpenGL2 Improvement
Test First Average Frame Rate First Average Frame Rate First Average
MixedGeometryCellScalars 3.75 0.319 3.1 0.11 0.0131 76.3 3409% 2435%
CellScalars 0.3 0.0433 23.1 0.094 0.002 500.0 319% 2165%
Scalars 0.4 0.0394 25.4 0.083 0.001875 533.3 482% 2101%
Default 0.293 0.039 25.6 0.11 0.00215 465.1 266% 1814%
MixedGeometryEdges 6.586 0.5 2.0 0.11 0.01567 63.8 5987% 3191%
Average 2093% 2341%






On Tue, Jan 5, 2016 at 12:51 PM, Ken Martin  wrote:

> Nice job Adam!
>
> I've though about your issue some more and I think the best solution is to
> revamp the vtkCompositePolyDataMapper2 to work a little differently.
> Basically always have it group together blocks that have the same
> properties and then render each of them with a helper mapper. That would
> give us great performance in both cases. I have added it to the OpenGL2
>  ToDo list just, not sure how soon someone will get to it as the old code
> works, it just isn't optimal in all cases.
>
> Thanks!
> Ken
>
>
>
> On Tue, Jan 5, 2016 at 12:39 PM, Adam Lyon  wrote:
>
>> Hi - Just thought I'd let you all know that I've finally made progress on
>> this problem. To recap, I have a MultiBlockDataSet (MBDS) containing
>> PolyData objects. The PolyData objects don't all have the same attributes
>> (some have Normals, some don't; some have particular FieldData, others
>> don't). This "heterogeneous" MBDS reflects the visualization data I get
>> from the Geant4 simulation program - some things have particular attributes
>> and others don't.
>>
>> As you (Ken & Utkarsh) pointed out, such a heterogenous MBDS triggers a
>> generic renderer in ParaView v5/OpenGL2 unless every block within the MBDS
>> has the same structure. The generic renderer is extremely slow, and it
>> makes interacting with the visualization in ParaView painful (e.g. a few
>> frames per second or less).
>>
>> I now have a filter (I should fix my ParaView Source that creates the
>> MBDS - but that'll be for later) that runs through the MBDS and makes it
>> homogeneous - that is it removes Normals and TCoords (only a very few
>> PolyData have them) and adds missing FieldData with defaults. This triggers
>> the fast renderer - and boy it's *a lot* faster. 30x - 200x faster frame
>> rates compared to the generic renderer.  The fast renderer is at least many
>> times faster than the OpenGL1 renderer in ParaView v4.4.
>>
>> I'm quite happy with this solution and am glad I can finally use the new
>> features in ParaView v5/OpenGL2. Woohoo!
>>
>> I'm wondering if other people are going to hit this generic renderer
>> slowness.. I added some code to my build of ParaView v5 in
>> vtkCompositePolyDataMapper2.cxx that std::cout's a message when the
>> generic renderer is triggered and why (e.g. heterogeneous Normals, TCoords,
>> Scalars, etc). I found that to be very helpful. Perhaps the render
>> annotation could show such a message (e.g. in vtkPVRenderView).
>>
>> Thanks again for your help!!  And Happy New Year!! -- Adam
>>
>> *--*
>>
>> *Adam L. Lyon*
>> *Scientist; Associate Division Head for Systems for Scientific
>> Applications*
>>
>> Scientific Computing Division & Muon g-2 Experiment
>> Fermi National Accelerator Laboratory
>> 630 840 5522 office
>> www.fnal.gov
>> l...@fnal.gov
>>
>> Connect with us!
>> Newsletter   |  Facebook
>>   |  Twitter
>> 
>>
>> On Wed, Dec 16, 2015 at 1:46 PM, Ken Martin 
>> wrote:
>>
>>> This code is all new hence the change. On the plus side if you moved
>>> from 4000 blocks of 10 triangles each to 4000 blocks of 1 triangles
>>> each the rendering performance would probably not slow down. The overhead
>>> is all in starting and stopping each of those 4000 mappers.
>>>
>>> The old backend wrote everything out into a displaylist and the OpenGL
>>> driver handled optimizing it and dealing with any inconsistencies. The new
>>> backend has to build vertex buffer objects and we currently only collapse
>>> all the blocks together into one VBO if the VBO structure is the same for
>>> every block.
>>>
>>> Thanks
>>> Ken
>>>
>>>
>>> On Wed, Dec 16, 2015 at 2:22 PM, Adam Lyon  wrote:
>>>
 Hi Ken - thanks for your reply. It's looking like the last approach - I
 figure out why I'm getting different blocks - is the way to go. It's
 already clear that not all of the blocks have colors. Some of the blo

[Paraview] ParaView 5.2 Release Candidate 1 available for download

[Cory Quammen]

On behalf of the ParaView development team, I am pleased to announce
that ParaView 5.2 Release Candidate 1 binaries and source tarballs are
now available for download at

http://www.paraview.org/download/

Please let us know if you encounter any problems with this release candidate.

Thanks,
Cory

-- 
Cory Quammen
Staff R&D Engineer
Kitware, Inc.
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[Paraview] create a time sequence from a steady-state vector

[Juan Carlos Araujo Cabarcas]

Hi, I have been working with eigenstates of the wave equation and I would
like to make
videos of a time evolution. I have vectors of the form u(x,y) and I want to
simply compute:

Y(x,y,t) = u(x,y)*cos(t), for various values of t. (or any other function
of t)

The naĩve way of doing this (which is very expensive) is to compute
Y1(x,y,t1), Y2(x,y,t2), ... Yn(x,y,tn) and add them into the final .vtk
file by adding the time in the vector label.

The vector u(x,y) is around 5 Mb, then by adding 100 time steps it becomes
a very big file!

I guess that it should be possible to do the same in a clever way by using
u(x,y) and passing the operation u(x,y)*cos(t) to paraview in order to
obtain the evolution/movie, but I have not been able to see how to do this
in the manual or email list.

Any thoughts? ... I would like this idea to work in both, the desktop and
web-based versions of paraview.

Kind regards,

Juan Carlos Araújo-Cabarcas.
Doktorand, Umeå Universitet

 "None of us is as clever as all of us" ... Japanese proverb
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