[Paraview] The "Whole Extent" in the TableToStructuredGrid filter?

[Nan Zhang]

Hi all,

I have a csv file for plotting the temperature. Its columns are (x,y,z,T).
This grid is an irregular mesh generated from Adaptive Mesh Refinement.

I tried to plot it with Table to Structured Grid because I want do some iso
volume filter afterwards. No matter how did I tried the "Whole Extent",
even followed previous paraview example athttp://www.paraview.org/pipe
rmail/paraview/2009-October/013948.html, I always got something like:

*ERROR: In ..\..\..\src\VTK\Graphics\vtkTableToStructuredGrid.cxx, line*
* 96 ** vtkPTableToStructuredGrid (0A195768): The input table must have
exactly** 1 ** rows. Currently it has 4 rows.*
*

The Table to Point works totally fine. I guess that I don't really
understand how to estimate the 3 "Whole Extent". The example at
http://www.paraview.org/pipermail/paraview/2009-October/013948.html does
not tell how you get Whole Extent (0, 149), (0, 151), (0, 2)?

Hope someone could give a more detail example! My CSV file is 30MB, and
could not be attached in this email.

Bests,
Nan
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Re: [Paraview] Customized sampling grid for Point Volume Interpolator or Gaussian re-sampling?

[Utkarsh Ayachit]

You'll need to use a two step approach. Use the "Point Volume
Interpolator" generate a 3D volume from your point cloud and then use
the "Resample With DataSet" with "Input" set to the "Point Volume
Interpolator" and the "Source" set to your 3D geometry to resample to.

Utkarsh

On Tue, Oct 11, 2016 at 1:48 AM, stephaneンドング メファネ
 wrote:
> Hello,
>
> I have a point cloud data set with scalars that I need to re-sample on a 3d
> geometry.
> the data set is not spatially uniform (hollow geometry) but I need a really
> fine re-sampling grid in order to get results close to the original data-set
> after interpolation on the 3d volume.
> is it possible to use a customized sampling grid in plugins like Point
> Volume Interpolator and Gaussian re-sampling? I need a fine grid only where
> the is geometry, so the default grid-box is using a lot of memory when
> increasing the grid resolution.
>
> Ndong-Mefane Stephane, Dr.Eng
> Basic Design Sec.
> Steam Turbine Dept.
> Kawasaki Factory
>
> Fuji Electric Co., Ltd
> 1-1, Tanabeshinden, Kawasaki-ku,
> Kawasaki-city 210-9530, Japan
> Phone: +81-44-329-2155
> Fax: +81-44-329-2394
>
>
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Re: [Paraview] [Paraview-developers] ParaView 5.2 Release Candidate 1 available for download

[David Lonie]

On Thu, Oct 13, 2016 at 7:18 AM, Gena Bug via ParaView <
paraview@paraview.org> wrote:

> On 11.10.2016 18:15, Utkarsh Ayachit wrote:
>
>> 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)
>>
> I attached two screenshots of a simple 2d cartesian mesh, one with
> anti-aliasing enabled and one without it. For me the one with AA looks
> strange -- cells look like circles not squares. Is it expected behavior?
>

Unfortunately it is. FXAA is an approximate anti-aliasing solution that's
applied as a post-processing pass over the rendered scene -- since ParaView
often does distributed rendering, this is really the only way we can
reliably get anti-aliasing without introducing major artifacts at processor
boundaries.

Because it's only working with the rendered pixel data (instead of actual
geometric primitives), there are some occasional issues like this one. In
this case, it's detecting the intersections as aliased edges and attempting
to smooth them out, fattening the line near the intersection as a result.

HTH,
Dave
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Re: [Paraview] [Paraview-developers] ParaView 5.2 Release Candidate 1 available for download

[Gena Bug via ParaView]

On 11.10.2016 18:15, Utkarsh Ayachit wrote:

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)
I attached two screenshots of a simple 2d cartesian mesh, one with 
anti-aliasing enabled and one without it. For me the one with AA looks 
strange -- cells look like circles not squares. Is it expected behavior?




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

--
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Staff R Engineer
Kitware, Inc.
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Re: [Paraview] vtkTableAlgorithm

[Utkarsh Ayachit]

That should be fine.

On Tue, Oct 11, 2016 at 2:35 PM, Dean, Kevin
 wrote:
> 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
>
> This email and its contents are confidential. If you are not the intended
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Re: [Paraview] source name in python view

[Felipe Bordeu]

thanks for the hint but m'i unable to find a way to map the filter id to
the data ID
(inside the python view script )

def Render(View,figure):
  from paraview.simple import *
  names = { x[1]:x[0] for x in GetSources().keys()}
  print(names)
  for i in xrange(view.GetNumberOfVisibleDataObjects()):
  print(view.GetVisibleRepresentation(i).GetUniqueIdentifier())



2016-10-13 10:14 GMT+02:00 :

> Hi Felipe
>
> Would GetSources(), maybe along with FindSource and SetActiveSource help
> you?
> ALL=GetSources() gives you a dictionary of all sources in your session.
>
> Cheers
> Venke
>
>
>
> > Felipe Bordeu  hat am 12. Oktober 2016 um 15:15
> > geschrieben:
> >
> >
> > I use python view to plot some data allons my 3D visualisation. Can I get
> > the name of the source inside the 'python view script' so I can know to
> > which source belongs each line on my plot?.
> > (I know I can set the name of a source using  RenameSource('Good Result
> ')
> > )
> >
> >
> > Felipe
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Re: [Paraview] ParaView 5.2 Release Candidate 1 available for download

[Andy Bauer]

Hi Ben,

I wasn't aware of the transparent background -- thanks!

This leads to one question though: any idea why this option isn't available
under the Save Screenshot Options when saving a screenshot? Changing the
color palette can be done in the GUI under Edit->Settings->Color Palette
which gets applied to screenshots but you can change the color palette for
just screenshots as well in the Save Screenshot Options. I'm assuming that
it's because the transparent background for screenshots doesn't affect the
GUI but I think it would be nice to have this option in the Save Screenshot
Options as well.

--Andy

On Thu, Oct 13, 2016 at 8:21 AM, Ben Boeckel 
wrote:

> On Thu, Oct 13, 2016 at 13:57:58 +0300, Gena Bug via ParaView wrote:
> > I'm slightly confused with background color for the screenshots when
> > trying to override palette. If I set Background to a Single color in the
> > Properties tab (gray by default) then nothing can change it --
> > background will always be gray on the screenshots. If I set Gradient for
> > the Background then:
> > 1. current palette: works as expected
> > 2. black bg: works
> > 3. default bg: don't know what's default but it looks like 1... OK
> > 4. gradient bg: like 1.
> > 5. gray bg: like 1.
> > 6. print bg: it looks like Color 1 is set to white in Background settings
> > 7. white bg: same as 6.
> >
> > So now there is no way to set white background for the screenshots
> > (previously it was possible when Single Color background was used but
> > not Gradient).
>
> Not sure if you're aware, but there is also the option to write out a
> screenshot where the background is transparent using an alpha channel.
> It also takes into account translucent geometry. It's under the Advanced
> settings in the General tab in Settings (search will also find it).
>
> --Ben
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Re: [Paraview] ParaView 5.2 Release Candidate 1 available for download

[Gena Bug via ParaView]

On 13.10.2016 15:21, Ben Boeckel wrote:

On Thu, Oct 13, 2016 at 13:57:58 +0300, Gena Bug via ParaView wrote:

I'm slightly confused with background color for the screenshots when
trying to override palette. If I set Background to a Single color in the
Properties tab (gray by default) then nothing can change it --
background will always be gray on the screenshots. If I set Gradient for
the Background then:
1. current palette: works as expected
2. black bg: works
3. default bg: don't know what's default but it looks like 1... OK
4. gradient bg: like 1.
5. gray bg: like 1.
6. print bg: it looks like Color 1 is set to white in Background settings
7. white bg: same as 6.

So now there is no way to set white background for the screenshots
(previously it was possible when Single Color background was used but
not Gradient).


Not sure if you're aware, but there is also the option to write out a
screenshot where the background is transparent using an alpha channel.
It also takes into account translucent geometry. It's under the Advanced
settings in the General tab in Settings (search will also find it).
Great! I didn't know, thank you! I've been expecting this feature for a 
looong time! Now my life will be better:)




--Ben


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

[Ben Boeckel]

On Wed, Oct 12, 2016 at 10:42:43 -0400, Ben Boeckel wrote:
> Oh, you're compiling 5.1.2 with the new superbuild; yes, that'd have the
> same thing. I'll look to see if there's a way to get FONTCONFIG_PATH
> default to the right place. Thanks for the hint.

Looks like updating to the latest fontconfig release solves the problem
with both the config file warnings and the cache files being dropped in
the wrong place; rc2 should be better.

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

[David Lonie]

Hi Gena,

I can confirm this, and it looks like there's an open bug report for the
issue:

https://gitlab.kitware.com/paraview/paraview/issues/15724

That should get updated when this gets addressed. In the meantime, changing
the background color manually (via the "Background" options in the property
panel) still seems to work properly in the screen shots. You can use this
to get a white background if desired.

HTH,
Dave

On Thu, Oct 13, 2016 at 6:57 AM, Gena Bug via ParaView <
paraview@paraview.org> wrote:

> Hi again!
>
> I'm slightly confused with background color for the screenshots when
> trying to override palette. If I set Background to a Single color in the
> Properties tab (gray by default) then nothing can change it -- background
> will always be gray on the screenshots. If I set Gradient for the
> Background then:
> 1. current palette: works as expected
> 2. black bg: works
> 3. default bg: don't know what's default but it looks like 1... OK
> 4. gradient bg: like 1.
> 5. gray bg: like 1.
> 6. print bg: it looks like Color 1 is set to white in Background settings
> 7. white bg: same as 6.
>
> So now there is no way to set white background for the screenshots
> (previously it was possible when Single Color background was used but not
> Gradient).
>
> 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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Re: [Paraview] ParaView 5.2 Release Candidate 1 available for download

[Ben Boeckel]

On Thu, Oct 13, 2016 at 13:57:58 +0300, Gena Bug via ParaView wrote:
> I'm slightly confused with background color for the screenshots when 
> trying to override palette. If I set Background to a Single color in the 
> Properties tab (gray by default) then nothing can change it -- 
> background will always be gray on the screenshots. If I set Gradient for 
> the Background then:
> 1. current palette: works as expected
> 2. black bg: works
> 3. default bg: don't know what's default but it looks like 1... OK
> 4. gradient bg: like 1.
> 5. gray bg: like 1.
> 6. print bg: it looks like Color 1 is set to white in Background settings
> 7. white bg: same as 6.
> 
> So now there is no way to set white background for the screenshots 
> (previously it was possible when Single Color background was used but 
> not Gradient).

Not sure if you're aware, but there is also the option to write out a
screenshot where the background is transparent using an alpha channel.
It also takes into account translucent geometry. It's under the Advanced
settings in the General tab in Settings (search will also find it).

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

[Gena Bug via ParaView]

Hi again!

I'm slightly confused with background color for the screenshots when 
trying to override palette. If I set Background to a Single color in the 
Properties tab (gray by default) then nothing can change it -- 
background will always be gray on the screenshots. If I set Gradient for 
the Background then:

1. current palette: works as expected
2. black bg: works
3. default bg: don't know what's default but it looks like 1... OK
4. gradient bg: like 1.
5. gray bg: like 1.
6. print bg: it looks like Color 1 is set to white in Background settings
7. white bg: same as 6.

So now there is no way to set white background for the screenshots 
(previously it was possible when Single Color background was used but 
not Gradient).


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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Re: [Paraview] OSPRay rendering issue

[David E DeMarle]

Most likely you are running into this bug:
https://gitlab.kitware.com/paraview/paraview/issues/16919

Try applying the generate surface normals filter and see if you get colors
then. If you can, please send me a screen capture and the data if
permissible to help track it down.


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

On Wed, Oct 12, 2016 at 8:46 PM, Seong Mo Yeon 
wrote:

> I have paraview 5.1.2 installed with ospray enabled.
> Ospray version is 1.1.0 prebuilt version.
> Paraview setting is as follows:
> LOD threshold as 0
> LOD resolution as 0.5
> Use outline for LOD rendering as checked
> Remote render threshold as 0
> Outline threshold as 10
> Use offscreen rendering for screenshots as checked
>
> The issue is that the surface extracted by extract block is not rendered
> properly but colored with black regardless of representation option.
> Other effects by e.g., stream tracer is rendered nicely.
>
> Is this behavior is due to paraview bug or my paraview setting?
>
> Thanks
>
>
>
> ---
> Sent from Boxer | http://getboxer.com 
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Re: [Paraview] source name in python view

[postgurke]

Hi Felipe

Would GetSources(), maybe along with FindSource and SetActiveSource help you?
ALL=GetSources() gives you a dictionary of all sources in your session.

Cheers
Venke



> Felipe Bordeu  hat am 12. Oktober 2016 um 15:15
> geschrieben:
> 
> 
> I use python view to plot some data allons my 3D visualisation. Can I get
> the name of the source inside the 'python view script' so I can know to
> which source belongs each line on my plot?.
> (I know I can set the name of a source using  RenameSource('Good Result ')
> )
> 
> 
> Felipe
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