[Paraview] Choppy images

[Peter Brady]

Hello all,

I'm trying to make black and white eps with images for a paper but they
appear to be coming out very choppy.  I've attached a pdf.  It almost looks
as if there is no anti-aliasing.  I'm using Paraview 3.6.1.  Is there a way
to set the level of anti-aliasing from a python script (I'm running batch
jobs).  I generated some very smooth eps figures last year (probably
Paraview 3.4).

Thanks,
Peter.


temp_20_3D_0150.pdf
Description: Adobe PDF document
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Re: [Paraview] tube filter, surfaces aren't closed?

[burlen]

Hi Ken,

You are correct. when VTK creates an OSMesa context is requests the 
default. OSMesa's default depth buffer is 16 bits, and that is the 
source of the problem. Explicitly requesting a 32 bit depth buffer 
solves the problems with the artifacts and the compositing. See the 
attached patch. Thanks to tom fogal for suggesting this during our 
conversation on the mesa-users mail list.


ParaView should probably default to a 32 bit depth buffer. I have just 
sent this to the vtk-dev list as well, since it looks like more of a VTK 
issue.


Burlen


Moreland, Kenneth wrote:
I’m guessing that this is a z-buffer precision issue. The nVidia card 
must be using a higher precision z-buffer or doing something else that 
is preventing the z-fighting that appears to be happening in the Mesa 
implementation.


-Ken


On 1/18/10 11:47 AM, "burlen"  wrote:

Yes, that is the case. There are 200 lines , each a single cell , and
the pvtp reader splits them up fairly evenly amongst processes to
begin
with. D3 is moving stuff around but it doesn't noticeably change
the result.

Moreland, Kenneth wrote:
> Looking at the mesa-artifacts-decomp.png image, it appears that you
> have many tubes that are coincident (or at least close to
coincident).
> There might be z-buffer resolution problems. What happens if you run
> the geometry through D3?
>
> -Ken
>
>
> On 1/15/10 10:28 AM, "burlen"  wrote:
>
> FYI, I re-organized the images illustrating the bug, and made a
> comparison of nvidia to mesa rendering on two cases 1) the
> artifacts 2)
> the parallel inconsistency, and removed the older images.
>
> 1)
> 
http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/mesa-artifacts.png
> 
http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/nvidia-no-artifacts-decomp.png
>
> 2)
> 
http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/mesa-artifacts-decomp.png
> 
http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/nvidia-no-artifacts.png
>
> burlen wrote:
> > So you are right these are artifacts not holes. Nasty looking
ones at
> > that. zooming in enough makes the artifacts receded toward the
egdes
> > of the tube. After some experimentation I'm finding that this has
> > something to do with mesa. It is reproducible only when using mesa.
> > Hardware rendering works fine, no artifacts.
> >
> > There also looks to be two things going on, 1) the artifacts, 2)
> > inconsistent selection of the visible faces on parallel runs.
> This is
> > shown here:
> >

http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/decomp-8-procs.png
> >
> >
> > I was using PV on this cluster fine back in dec to make very
similar
> > figures with stream tubes and didn't see any of these issues...
> >
> > I added the dataset to reproduce to the bug report.
> >
> > Moreland, Kenneth wrote:
> >> It could be a rendering artifact. What happens when you zoom into
> >> the problem area?
> >>
> >> -Ken
> >>
> >>
> >> On 1/14/10 12:24 AM, "burlen"  wrote:
> >>
> >> Any ideas as to why tubes from the tube filter aren't closed
> >> surfaces
> >> now? screenshot:
> >> http://public.kitware.com/Bug/view.php?id=10139
> >>
> >> ___
> >> Powered by www.kitware.com
> >>
> >> Visit other Kitware open-source projects at
> >> http://www.kitware.com/opensource/opensource.html
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> >> Please keep messages on-topic and check the ParaView Wiki at:
> >> http://paraview.org/Wiki/ParaView
> >>
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> >>
> >>
> >>
> >>
> >>  Kenneth Moreland
> >> *** Sandia National Laboratories
> >> *** *** *** *** email: kmo...@sandia.gov
> >> ** *** ** phone: (505) 844-8919
> >> *** web: http://www.cs.unm.edu/~kmorel

> 
> >> 
> >>
> >
>
>
>
>
>
>  Kenneth Moreland
> *** Sandia National Laboratories
> ***
> *** *** *** email: kmo...@sandia.gov
> ** *** ** phone: (505) 844-8919
> *** web: http://www.cs.unm.edu/~kmorel

> 
>





 Kenneth Moreland
*** Sandia National Laboratories
***
*** *** *** email: kmo...@sandia.gov
** *** ** phone: (505) 844-8919
*** web: http://www.cs.unm.edu/~kmorel 



Index: VTK/Rendering/vtkXOpenGLRenderWindow.cxx
===
RCS file: /cvsroot/ParaView3/ParaView3/VTK/Rendering/vtkXOpen

[Paraview] Kitware blog

[David E DeMarle]

Kitware launched  its first
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Phone: 518-371-3971 x109
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Re: [Paraview] block merging using Paraview

[Julien Bodart]

Thanks for your help and sorry for the mailing list. I will
investigate the custom filters to get rid of the visual artefact. I
still have your solution. I was just afraid to miss an obvious way to
do it. Thanks again for your time.
Julien

2010/1/28, Andy Bauer :
> Please keep the discussions on the mailing list so that others can
> contribute and benefit from the information.
>
> I think the best solution is to create a custom filter that stitches the two
> rectilinear grids together in the way you want.  Most other solutions will
> convert your rectilinear grids to unstructured grids and thus use a lot more
> memory.
>
> Usually when you split a grid into multiple grids you'll get visual
> artifacts.
>
> Andy
>
> On Thu, Jan 28, 2010 at 12:12 PM, Julien Bodart
> wrote:
>
>> I am more working on the first option.
>> Actually those two files share a single uniform grid, so the space between
>> the two blocks is exactly the cell size. (so in this simple case it is
>> quite
>> huge). The reverse question works as well:
>> what happens if I split one single data file (with a rectilinear grid) in
>> two files (with no connections), just two subsets and two subgrids, how to
>> load them and see a "single grid".
>>
>> In my case loading the two files gives you all the grid nodes and then all
>> the needed information, but it looks like you have two different blocks.
>> In a finite volume point of view, maybe it means "adding one cell between
>> the two blocks", but if the information is on the nodes like here, nothing
>> more is needed.
>>
>> Your first solution works for me. I mean what you get using these simple
>> files is exactly what I want.
>> The problem there is the memory consumption (for example on my pc I can
>> open two regular files using just 22% of the memory, the MergeBlock
>> filters
>> goes to 66% and then every action make paraview crash). It looks "the
>> brute
>> force" for something I was expecting to be just tricky. (no extra nodes
>> needed)
>>
>> I hope it is more descriptive.
>>
>>
>> 2010/1/28 Andy Bauer 
>>
>>> I'm still not completely understanding what you want done.  Since the two
>>> data sets have significant space between them do you want to fill in that
>>> space with extra cells or do you want to translate one of the data sets
>>> to
>>> get rid of the space between?  If you want to add in cells then it might
>>> be
>>> easiest to merge the data sets (GroupDataSet filter and then MergeBlocks
>>> filter like below) and then use the vtkDelauney3D filter to create a new
>>> grid that keeps the point data.
>>>
>>> If you want to translate one of the grids to get rid of the space between
>>> them you'll need to use something like the CleanToGrid filter to get an
>>> unstructured grid from your rectilinear grid.  Then  you can use the
>>> Transform filter to move it to the proper position (in this case
>>> -0.100148999 in the z direction for test.2.nc since the
>>> vtkCleantoGridFilter is quite finicky).  Then use GroupDataSets filter to
>>> merge the data sets into a multiblock (right click on the GroupDataSets
>>> filter to select one of the test.*.nc files and the the Transform
>>> filter).
>>> Finally, you'll need to use the vtkCleantoGrid filter again to get the
>>> proper connectivity.  You'll want to check what it does with the point
>>> data
>>> at the merged points though.
>>>
>>> If neither of these is what you want then you'll need to be very
>>> descriptive of what  you hope to accomplish in order for me to help you
>>> any
>>> more.
>>>
>>> Andy
>>>
>>>
>>> On Thu, Jan 28, 2010 at 5:51 AM, Julien Bodart
>>> wrote:
>>>
 Andy,

 Thanks for your help.
 I have attached two simple files I am trying to merge. But looking at
 the
 problem, I am afraid you will tell me that there is no solution.
 As you will see there is no duplicate points,  thus Paraview cannot
 guess
 it.
 What is the best way to make them paraview-compliant? Add duplicate
 cells?
 Thanks.

 Julien

 2010/1/27 Andy Bauer 

> To be clear, I meant first use the group data set filter or merge block
> filter to put all of the cells in the same data set and then use the
> clean
> to grid filter to get rid of duplicate points.  Points won't get merged
> if
> they are not within a certain distance from each other.  So again the
> real
> problem isn't that all of the cells aren't in the same data set but the
> fact
> that the grid connectivity is not correct.  If you are doing this in
> parallel this can also have an affect on appearance due to not having
> the
> correct connectivity between cells on different partitions/processors.
>
> If you can give me a more detailed description of the problem and send
> the grid I can take a closer look at it.
>
> Andy
>
>
> On Wed, Jan 27, 2010 at 10:04 AM, Julien Bodart <
> julien.bod...@gmail.com> wrote:
>
>>

Re: [Paraview] block merging using Paraview

[Andy Bauer]

Please keep the discussions on the mailing list so that others can
contribute and benefit from the information.

I think the best solution is to create a custom filter that stitches the two
rectilinear grids together in the way you want.  Most other solutions will
convert your rectilinear grids to unstructured grids and thus use a lot more
memory.

Usually when you split a grid into multiple grids you'll get visual
artifacts.

Andy

On Thu, Jan 28, 2010 at 12:12 PM, Julien Bodart wrote:

> I am more working on the first option.
> Actually those two files share a single uniform grid, so the space between
> the two blocks is exactly the cell size. (so in this simple case it is quite
> huge). The reverse question works as well:
> what happens if I split one single data file (with a rectilinear grid) in
> two files (with no connections), just two subsets and two subgrids, how to
> load them and see a "single grid".
>
> In my case loading the two files gives you all the grid nodes and then all
> the needed information, but it looks like you have two different blocks.
> In a finite volume point of view, maybe it means "adding one cell between
> the two blocks", but if the information is on the nodes like here, nothing
> more is needed.
>
> Your first solution works for me. I mean what you get using these simple
> files is exactly what I want.
> The problem there is the memory consumption (for example on my pc I can
> open two regular files using just 22% of the memory, the MergeBlock filters
> goes to 66% and then every action make paraview crash). It looks "the brute
> force" for something I was expecting to be just tricky. (no extra nodes
> needed)
>
> I hope it is more descriptive.
>
>
> 2010/1/28 Andy Bauer 
>
>> I'm still not completely understanding what you want done.  Since the two
>> data sets have significant space between them do you want to fill in that
>> space with extra cells or do you want to translate one of the data sets to
>> get rid of the space between?  If you want to add in cells then it might be
>> easiest to merge the data sets (GroupDataSet filter and then MergeBlocks
>> filter like below) and then use the vtkDelauney3D filter to create a new
>> grid that keeps the point data.
>>
>> If you want to translate one of the grids to get rid of the space between
>> them you'll need to use something like the CleanToGrid filter to get an
>> unstructured grid from your rectilinear grid.  Then  you can use the
>> Transform filter to move it to the proper position (in this case
>> -0.100148999 in the z direction for test.2.nc since the
>> vtkCleantoGridFilter is quite finicky).  Then use GroupDataSets filter to
>> merge the data sets into a multiblock (right click on the GroupDataSets
>> filter to select one of the test.*.nc files and the the Transform filter).
>> Finally, you'll need to use the vtkCleantoGrid filter again to get the
>> proper connectivity.  You'll want to check what it does with the point data
>> at the merged points though.
>>
>> If neither of these is what you want then you'll need to be very
>> descriptive of what  you hope to accomplish in order for me to help you any
>> more.
>>
>> Andy
>>
>>
>> On Thu, Jan 28, 2010 at 5:51 AM, Julien Bodart 
>> wrote:
>>
>>> Andy,
>>>
>>> Thanks for your help.
>>> I have attached two simple files I am trying to merge. But looking at the
>>> problem, I am afraid you will tell me that there is no solution.
>>> As you will see there is no duplicate points,  thus Paraview cannot guess
>>> it.
>>> What is the best way to make them paraview-compliant? Add duplicate
>>> cells?
>>> Thanks.
>>>
>>> Julien
>>>
>>> 2010/1/27 Andy Bauer 
>>>
 To be clear, I meant first use the group data set filter or merge block
 filter to put all of the cells in the same data set and then use the clean
 to grid filter to get rid of duplicate points.  Points won't get merged if
 they are not within a certain distance from each other.  So again the real
 problem isn't that all of the cells aren't in the same data set but the 
 fact
 that the grid connectivity is not correct.  If you are doing this in
 parallel this can also have an affect on appearance due to not having the
 correct connectivity between cells on different partitions/processors.

 If you can give me a more detailed description of the problem and send
 the grid I can take a closer look at it.

 Andy


 On Wed, Jan 27, 2010 at 10:04 AM, Julien Bodart <
 julien.bod...@gmail.com> wrote:

> Well, actually I think I tried all the filters, included the clean to
> grid one.
> In my case there is actually no duplicate point between files:
>
> for example:
>
> file-1, z-coord: 0.0,0.1,0.2
> file-2, z-coord: 0.3,0.4,0.5
>
> And the grid is structured.
>
> Maybe in this case there is no way to make a single dataset?
>
>
>
> 2010/1/27 Andy Bauer 
>
>> Try using th

Re: [Paraview] pvserver : cannot connect to X server

[Paul Edwards]

I've just run into the same problem (CVS updated at earlier in the week) and
I cannot run pvserver without a X display.  It means I can't run it on my
cluster (not even when using OSMesa and the --use-offscreen-rendering
option)

Any ideas?

Thanks,
Paul


On 28 January 2010 12:57, Pierre-Olivier Dallaire <
pierre-olivier.dalla...@videotron.ca> wrote:

> Well it does not solve my problem ...
>
> I never had this behaviour before / connecting with X was not necessary.
> This problem started this week / last week cvs was fine.
>
> Any idea why it's causing that ?
>
> Thanks
>
> PO
>
> On 2010-01-27, at 2:43 PM, Pierre-Olivier Dallaire wrote:
>
> > I never used the the -X option when connecting with ssh on the server in
> order to initialize pvserver.
> >
> > I think now the solution is to use the -X but start pvserver with option
> "-dc"
> >
> > PO
> > On 2010-01-27, at 2:35 PM, Utkarsh Ayachit wrote:
> >
> >> Are you sure the display is accessible on the server machine? What
> >> happens when you open something like gvim?
> >>
> >> Utkarsh
> >>
> >> On Wed, Jan 27, 2010 at 10:04 AM, Pierre-Olivier Dallaire
> >>  wrote:
> >>> Hi,
> >>>
> >>> when trying to start pvserver on the my ParaView server linux machine,
> I'm getting this new
> >>> error with the latest cvs version, error that I never had before :
> >>>
> >>> pvserver
> >>> : cannot connect to X server
> >>>
> >>> Thanks!
> >>>
> >>> PO
> >>> ___
> >>> Powered by www.kitware.com
> >>>
> >>> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
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> http://paraview.org/Wiki/ParaView
> >>>
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> >>>
> >
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Re: [Paraview] block merging using Paraview

[Andy Bauer]

I'm still not completely understanding what you want done.  Since the two
data sets have significant space between them do you want to fill in that
space with extra cells or do you want to translate one of the data sets to
get rid of the space between?  If you want to add in cells then it might be
easiest to merge the data sets (GroupDataSet filter and then MergeBlocks
filter like below) and then use the vtkDelauney3D filter to create a new
grid that keeps the point data.

If you want to translate one of the grids to get rid of the space between
them you'll need to use something like the CleanToGrid filter to get an
unstructured grid from your rectilinear grid.  Then  you can use the
Transform filter to move it to the proper position (in this case
-0.100148999 in the z direction for test.2.nc since the
vtkCleantoGridFilter is quite finicky).  Then use GroupDataSets filter to
merge the data sets into a multiblock (right click on the GroupDataSets
filter to select one of the test.*.nc files and the the Transform filter).
Finally, you'll need to use the vtkCleantoGrid filter again to get the
proper connectivity.  You'll want to check what it does with the point data
at the merged points though.

If neither of these is what you want then you'll need to be very descriptive
of what  you hope to accomplish in order for me to help you any more.

Andy

On Thu, Jan 28, 2010 at 5:51 AM, Julien Bodart wrote:

> Andy,
>
> Thanks for your help.
> I have attached two simple files I am trying to merge. But looking at the
> problem, I am afraid you will tell me that there is no solution.
> As you will see there is no duplicate points,  thus Paraview cannot guess
> it.
> What is the best way to make them paraview-compliant? Add duplicate cells?
> Thanks.
>
> Julien
>
> 2010/1/27 Andy Bauer 
>
>> To be clear, I meant first use the group data set filter or merge block
>> filter to put all of the cells in the same data set and then use the clean
>> to grid filter to get rid of duplicate points.  Points won't get merged if
>> they are not within a certain distance from each other.  So again the real
>> problem isn't that all of the cells aren't in the same data set but the fact
>> that the grid connectivity is not correct.  If you are doing this in
>> parallel this can also have an affect on appearance due to not having the
>> correct connectivity between cells on different partitions/processors.
>>
>> If you can give me a more detailed description of the problem and send the
>> grid I can take a closer look at it.
>>
>> Andy
>>
>>
>> On Wed, Jan 27, 2010 at 10:04 AM, Julien Bodart 
>> wrote:
>>
>>> Well, actually I think I tried all the filters, included the clean to
>>> grid one.
>>> In my case there is actually no duplicate point between files:
>>>
>>> for example:
>>>
>>> file-1, z-coord: 0.0,0.1,0.2
>>> file-2, z-coord: 0.3,0.4,0.5
>>>
>>> And the grid is structured.
>>>
>>> Maybe in this case there is no way to make a single dataset?
>>>
>>>
>>>
>>> 2010/1/27 Andy Bauer 
>>>
 Try using the clean to grid filter.  Although all of the cells are in
 the same data set (probably an unstructured grid), the filter does not
 realize that there are duplicate points and because of this the grid
 connectivity is probably not what you're expecting.

 Andy

 On Wed, Jan 27, 2010 at 8:03 AM, Julien Bodart >>> > wrote:

> Hi,
>
> I am new to Paraview, thanks to the new Netcdf Reader of 3.6 release.
> (Thank you very much for that)
> Therefore my problem is probably really trivial but I can't get it
> resolved...
> I am reading 2 or more netcdf file describing several part of the grid.
> The complete domain is a cube(rectilinear grid), sliced in a given
> number of files. There is no ghost cells so there is no obvious match
> between files.
> When I try to merge the different block (using the group dataset filter
> or merge block), I end up with a split domain, leading to a visual gap
> between each sub-domain, whether I am plotting contour , vertical plane or
> whatever.
> Is there a way to "really" merge those subdomain to end up with a
> single domain.
>
> Thanks in advance!
>
> Julien
>
>
> ___
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>
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>
>

>>>
>>
>
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Follow thi

Re: [Paraview] how to show the co-ordinates of the a point in paraview

[Moreland, Kenneth]

If you just want to see a list of point coordinates, you could create a 
spreadsheet view and view your grid in that.

-Ken


On 1/28/10 7:10 AM, "Eric E. Monson"  wrote:

Hey Kalpana,

You can get ParaView to display scalar or vector quantities associated with 
points while they are selected. If you select some points, then under the View 
menu open the Selection Inspector, at the bottom of this panel there is a 
section called Display Style. Click on the Point Label tab and check Visible. 
You will see a combo-box called Label Mode, and in this list are all of the 
scalars and vectors associated with your point data.

The point coordinates are not listed, but you can can create a new vector that 
contains a copy of the coordinates with the Calculator filter. In the 
Calculator Properties panel there is a combo box/button labeled Vectors, and 
one of the entries should be "coords" (or you can just type coords in the 
equation line edit. You can rename the result to something more meaningful like 
Coordinates. Now when you select points from this new data, the new Coordinates 
vector should show up under the Label Mode of the Point Label section of the 
Selection Inspector.

Let us know if you have any problems,
-Eric

--
Eric E Monson
Duke Visualization Technology Group



On Jan 28, 2010, at 4:31 AM, Kalpana Kanthasamy wrote:

> hi,
>
> I have an unstructured grid of 758257 points. How do I show get paraview to 
> show the co-ordinates of the points ..?
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     Kenneth Moreland
***  Sandia National Laboratories
***
*** *** ***  email: kmo...@sandia.gov
**  ***  **  phone: (505) 844-8919
***  web:   http://www.cs.unm.edu/~kmorel

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Re: [Paraview] compare two datasets in paraview

[Eric E. Monson]

Hey again,

There may be other ways, too, but you can do this with the Python Programmable 
Filter (PPF). To have two inputs to the PPF you need to select both data sets 
in the pipeline (on mac it's command-click, others may be control-click...) and 
then apply the filter. Here is a sample script which subtracts the coordinates 
of the two data sets from each other and makes a new vector data attribute out 
of that difference:

# ===
from paraview.vtk import vtkFloatArray

in0 = self.GetInputDataObject(0,0)
in1 = self.GetInputDataObject(0,1)
pti0 = in0.GetPoints()
pti1 = in1.GetPoints()
numPts = in0.GetNumberOfPoints()

vec = vtkFloatArray()
vec.SetName('coordDiff')
vec.SetNumberOfComponents(3)
vec.SetNumberOfTuples(numPts)

for ii in range(numPts):
# compute velocity and put in vec
tmpDiff = [0.0, 0.0, 0.0]
pos1 = pti1.GetPoint(ii)
pos0 = pti0.GetPoint(ii)
for kk in range(len(tmpDiff)):
tmpDiff[kk] = pos1[kk] - pos0[kk]
vec.SetTuple3(ii,tmpDiff[0],tmpDiff[1],tmpDiff[2])

out1 = self.GetOutputDataObject(0)
out1.ShallowCopy(in0)
out1.GetPointData().AddArray(vec)
# ===

This doesn't do any checking for matching IDs of the points or whether both 
sets have the same number of points (I have an extended script which searches 
for points with matching ID if you need help doing that), but if they really 
match it will work. (Others can let you know if there are better ways of doing 
this or if I've done anything "non-standard" in my script.)

Good luck,
-Eric

--
Eric E Monson
Duke Visualization Technology Group


On Jan 28, 2010, at 7:10 AM, Kalpana Kanthasamy wrote:

> hi
>  
> me again, how do I compare the co-ordinates of two datasets in paraview.. I 
> have two dataset..of the same set of points but their cordinates differ 
> slightly. I need the number of these co-ordinates
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[Paraview] how to load whole trajectory data into paraview

[Ashish Bhateja]

Dear friends,

I have a trajectory data of granular particles from a simulation. I can
visualize easily single configuration of particles using .vtk file. But
when I load the whole trajectory data having 100 frames (or particle's
configurations) then Paraview shows some error

Please guide me how can I do that.

Thanks.

Ashish

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Re: [Paraview] how to show the co-ordinates of the a point in paraview

[Eric E. Monson]

Hey Kalpana,

You can get ParaView to display scalar or vector quantities associated with 
points while they are selected. If you select some points, then under the View 
menu open the Selection Inspector, at the bottom of this panel there is a 
section called Display Style. Click on the Point Label tab and check Visible. 
You will see a combo-box called Label Mode, and in this list are all of the 
scalars and vectors associated with your point data. 

The point coordinates are not listed, but you can can create a new vector that 
contains a copy of the coordinates with the Calculator filter. In the 
Calculator Properties panel there is a combo box/button labeled Vectors, and 
one of the entries should be "coords" (or you can just type coords in the 
equation line edit. You can rename the result to something more meaningful like 
Coordinates. Now when you select points from this new data, the new Coordinates 
vector should show up under the Label Mode of the Point Label section of the 
Selection Inspector.

Let us know if you have any problems,
-Eric

--
Eric E Monson
Duke Visualization Technology Group



On Jan 28, 2010, at 4:31 AM, Kalpana Kanthasamy wrote:

> hi,
>  
> I have an unstructured grid of 758257 points. How do I show get paraview to 
> show the co-ordinates of the points ..?
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> 
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Re: [Paraview] pvserver : cannot connect to X server

[Pierre-Olivier Dallaire]

Well it does not solve my problem ...

I never had this behaviour before / connecting with X was not necessary.
This problem started this week / last week cvs was fine.

Any idea why it's causing that ?

Thanks

PO

On 2010-01-27, at 2:43 PM, Pierre-Olivier Dallaire wrote:

> I never used the the -X option when connecting with ssh on the server in 
> order to initialize pvserver.
> 
> I think now the solution is to use the -X but start pvserver with option "-dc"
> 
> PO
> On 2010-01-27, at 2:35 PM, Utkarsh Ayachit wrote:
> 
>> Are you sure the display is accessible on the server machine? What
>> happens when you open something like gvim?
>> 
>> Utkarsh
>> 
>> On Wed, Jan 27, 2010 at 10:04 AM, Pierre-Olivier Dallaire
>>  wrote:
>>> Hi,
>>> 
>>> when trying to start pvserver on the my ParaView server linux machine, I'm 
>>> getting this new
>>> error with the latest cvs version, error that I never had before :
>>> 
>>> pvserver
>>> : cannot connect to X server
>>> 
>>> Thanks!
>>> 
>>> PO
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>>> http://paraview.org/Wiki/ParaView
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>>> 
> 
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[Paraview] compare two datasets in paraview

[Kalpana Kanthasamy]

hi

me again, how do I compare the co-ordinates of two datasets in paraview.. I
have two dataset..of the same set of points but their cordinates differ
slightly. I need the number of these co-ordinates
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Re: [Paraview] Problems writing an .vtu file

[Jean M. Favre]

s.habbinga wrote:
> Hello everybody,
>
> I've been trying to write a c++ function to convert my data into .vtu
> files. Unfortunately, paraview isn't able to read my .vtu files. I get
> the following error-message:
>
>
>   

there is a typographic error in your file.

Replace the line
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Re: [Paraview] X Error: BadLength on OpenSUSE11.2

[Robert Sawko]

All right. I solved the issue. My graphic card drivers where not
properly installed. Re-installation of these have solved the problem
and now I have direct rendering again and can use volume.

Thanks for your hint.

Robert
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[Paraview] Problems writing an .vtu file

[s . habbinga]

Hello everybody,

I've been trying to write a c++ function to convert my data into .vtu
files. Unfortunately, paraview isn't able to read my .vtu files. I get
the following error-message:

ERROR: In
/home/zam/domini/paraview/ParaView3src/VTK/Filtering/vtkExecutive.cxx,
line 757
vtkCompositeDataPipeline (0x8cf34b0): Algorithm
vtkXMLUnstructuredGridReader(0x8d915d0) returned failure for request:
vtkInformation (0x90c34e8)
  Debug: Off
  Modified Time: 383066
  Reference Count: 1
  Registered Events: (none)
  Request: REQUEST_INFORMATION
  FORWARD_DIRECTION: 0
  ALGORITHM_AFTER_FORWARD: 1


I'm obviously doing something wrong... can anyone help? I really can't
find the error. Below, you find a sample .vtu file.
Thanks in advance!!

Sonja



  

  

  1 1 1 1 1 1 1 1
  2 2 2 2 2 2 2 2
  3 3 3 3 3 3 3 3
  4 4 4 4 4 4 4 4
  5 5 5 5 5 5 5 5
  6 6 6 6 6 6 6 6
  0 0 0 0 0 0 0 0
  7 7 7 7 7 7 7 7
  8 8 8 8 8 8 8 8
  10 10 10 10 10 10 10 10
  9 9 9 9 9 9 9 9
  11 11 11 11 11 11 11 11


  
  
  
  

  0 -37.5 -225 37.5 -37.5 -225 0 0 -225 37.5 0 -225 0 -37.5 -75 37.5
-37.5 -75 0 0 -75 37.5 0 -75
  -37.5 0 -225 0 0 -225 -37.5 37.5 -225 0 37.5 -225 -37.5 0 -75 0 0
-75 -37.5 37.5 -75 0 37.5 -75
  0 0 -225 37.5 0 -225 0 37.5 -225 37.5 37.5 -225 0 0 -75 37.5 0 -75
0 37.5 -75 37.5 37.5 -75
  -37.5 -37.5 -75 0 -37.5 -75 -37.5 0 -75 0 0 -75 -37.5 -37.5 75 0
-37.5 75 -37.5 0 75 0 0 75
  0 -37.5 -75 37.5 -37.5 -75 0 0 -75 37.5 0 -75 0 -37.5 75 37.5
-37.5 75 0 0 75 37.5 0 75
  -37.5 0 -75 0 0 -75 -37.5 37.5 -75 0 37.5 -75 -37.5 0 75 0 0 75
-37.5 37.5 75 0 37.5 75
  -37.5 -37.5 -225 0 -37.5 -225 -37.5 0 -225 0 0 -225 -37.5 -37.5
-75 0 -37.5 -75 -37.5 0 -75 0 0 -75
  0 0 -75 37.5 0 -75 0 37.5 -75 37.5 37.5 -75 0 0 75 37.5 0 75 0
37.5 75 37.5 37.5 75
  -37.5 -37.5 75 0 -37.5 75 -37.5 0 75 0 0 75 -37.5 -37.5 225 0
-37.5 225 -37.5 0 225 0 0 225
  -37.5 0 75 0 0 75 -37.5 37.5 75 0 37.5 75 -37.5 0 225 0 0 225
-37.5 37.5 225 0 37.5 225
  0 -37.5 75 37.5 -37.5 75 0 0 75 37.5 0 75 0 -37.5 225 37.5 -37.5
225 0 0 225 37.5 0 225
  0 0 75 37.5 0 75 0 37.5 75 37.5 37.5 75 0 0 225 37.5 0 225 0 37.5
225 37.5 37.5 225


  
  

  0 1 2 3 4 5 6 7
  8 9 10 11 12 13 14 15
  16 17 18 19 20 21 22 23
  24 25 26 27 28 29 30 31
  32 33 34 35 36 37 38 39
  40 41 42 43 44 45 46 47
  48 49 50 51 52 53 54 55
  56 57 58 59 60 61 62 63
  64 65 66 67 68 69 70 71
  72 73 74 75 76 77 78 79
  80 81 82 83 84 85 86 87
  88 89 90 91 92 93 94 95



  8 16 24 32 40 48 56 64 72 80 88 96


  11 11 11 11 11 11 11 11 11 11 11 11

  

  





Forschungszentrum Juelich GmbH
52425 Juelich
Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzende des Aufsichtsrats: MinDir'in Baerbel Brumme-Bothe
Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender),
Dr. Ulrich Krafft (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt


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Re: [Paraview] block merging using Paraview

[Julien Bodart]

Andy,

Thanks for your help.
I have attached two simple files I am trying to merge. But looking at the
problem, I am afraid you will tell me that there is no solution.
As you will see there is no duplicate points,  thus Paraview cannot guess
it.
What is the best way to make them paraview-compliant? Add duplicate cells?
Thanks.

Julien

2010/1/27 Andy Bauer 

> To be clear, I meant first use the group data set filter or merge block
> filter to put all of the cells in the same data set and then use the clean
> to grid filter to get rid of duplicate points.  Points won't get merged if
> they are not within a certain distance from each other.  So again the real
> problem isn't that all of the cells aren't in the same data set but the fact
> that the grid connectivity is not correct.  If you are doing this in
> parallel this can also have an affect on appearance due to not having the
> correct connectivity between cells on different partitions/processors.
>
> If you can give me a more detailed description of the problem and send the
> grid I can take a closer look at it.
>
> Andy
>
>
> On Wed, Jan 27, 2010 at 10:04 AM, Julien Bodart 
> wrote:
>
>> Well, actually I think I tried all the filters, included the clean to grid
>> one.
>> In my case there is actually no duplicate point between files:
>>
>> for example:
>>
>> file-1, z-coord: 0.0,0.1,0.2
>> file-2, z-coord: 0.3,0.4,0.5
>>
>> And the grid is structured.
>>
>> Maybe in this case there is no way to make a single dataset?
>>
>>
>>
>> 2010/1/27 Andy Bauer 
>>
>>> Try using the clean to grid filter.  Although all of the cells are in the
>>> same data set (probably an unstructured grid), the filter does not realize
>>> that there are duplicate points and because of this the grid connectivity is
>>> probably not what you're expecting.
>>>
>>> Andy
>>>
>>> On Wed, Jan 27, 2010 at 8:03 AM, Julien Bodart 
>>> wrote:
>>>
 Hi,

 I am new to Paraview, thanks to the new Netcdf Reader of 3.6 release.
 (Thank you very much for that)
 Therefore my problem is probably really trivial but I can't get it
 resolved...
 I am reading 2 or more netcdf file describing several part of the grid.
 The complete domain is a cube(rectilinear grid), sliced in a given
 number of files. There is no ghost cells so there is no obvious match
 between files.
 When I try to merge the different block (using the group dataset filter
 or merge block), I end up with a split domain, leading to a visual gap
 between each sub-domain, whether I am plotting contour , vertical plane or
 whatever.
 Is there a way to "really" merge those subdomain to end up with a single
 domain.

 Thanks in advance!

 Julien


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>>>
>>
>


test.1.nc
Description: Cdf file


test.2.nc
Description: Cdf file
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Re: [Paraview] VTK_Edge for LIC

[Adriano Gagliardi]

Zhanping,
 
Will the options to modify the density, thickness, and colour of the
streaklines be available to the user? It is definitely a good tool, but
sometimes we find it better to visualise using the standard streamtracer as
we can modify their appearance for clarity.
 
-Bastil: If you use extract surface, you'll need to make sure you have a
shear stress vector available on the surface (or create one before-hand),
assuming you are doing aero flows. However, if you use extract block on the
surfaces within the ensight volume data, you should be able to use the
velocity vector as input for LIC too (I think it takes the data just off the
surface for visualising, although I'm not sure). It isn't as nice as using
shear stress, but works well enough.
 
Regards,
 
Adriano

===

Adriano Gagliardi MEng PhD
Project Scientist
Computational Aerodynamics
Aircraft Research Association Ltd.
Manton Lane
Bedford

Tel: 01234 32 4644
E-mail: agaglia...@ara.co.uk
Url: www.ara.co.uk 

 

  _  

From: paraview-boun...@paraview.org [mailto:paraview-boun...@paraview.org]
On Behalf Of Zhanping Liu
Sent: 27 January 2010 22:24
To: bastil2...@yahoo.de
Cc: ParaView
Subject: Re: [Paraview] VTK_Edge for LIC


In fact we are now integrating LIC to VTK. One of the features is that flow
streaks are clearer than before in the resulting image.
-Zhanping


On Wed, Jan 27, 2010 at 5:02 PM, bastil2...@yahoo.de 
wrote:


Dear group,

I have compiled VTK_Edge against paraview 3.6.2. Everything worked fine
except that make install did not install "libVTKEdge.so" to the install
directory - I had to copy this manually. Is this a bug or a feature?

Afterwards I can load libVTKEdge.so to paraview without problems.
However, where are the new features? I am especially interested in LIC
and I only found lic on 2D structured grids and LIC on image data in the
filters menu. Both are greyed off with my Ensight-Reader multiblock
unstructured grids. Does it only run on structured grid? Am I missing
something?

Regards BastiL
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Kitware, Inc.
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Clifton Park, NY 12065-8662
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http://www.zhanpingliu.org


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[Paraview] how to show the co-ordinates of the a point in paraview

[Kalpana Kanthasamy]

hi,

I have an unstructured grid of 758257 points. How do I show get paraview to
show the co-ordinates of the points ..?
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