Dear Magician,
Finally I understood how it works after exact following the instructions:
set the input (VTS) and source (Plane) on the Change Input Dialog
Although I wouldn't call this dialog user-friendly, it works, so thank
you very much for solving this issue.
Best regards,
Mikhail
On 05/27/2014 11:34 AM, Magician wrote:
Hi Mikhail,
Maybe the usage of Resample With Dataset is wrong.
You should set the input (VTS) and source (Plane) on the Change Input
Dialog correctly.
Try the attached state file.
Magician
On May 27, 2014, at 2:34, Mikhail Artemyev <artemiev.mikh...@gmail.com
<mailto:artemiev.mikh...@gmail.com>> wrote:
Dear Magician,
Here is a precise algorithm I follow to:
1. Read the data (I usually do that in terminal: paraview test.vts)
(test.vts is attached)
2. Sources -> Plane (Origin: 0 0 0, Point1: 4 0 0, Point2: 0 2 0, X
Resolution: 200, Y Resolution: 100)
3. Filters -> Resample With Dataset -> (Available input ports:
Source; Select Input: Plane1) (test.pvsm is attached)
(After applying this filter I get nothing)
4. Repeating step 3 with exactly the same parameters (if I remember
correctly) gave me the desired result once. But now it doesn't.
Nevertheless test2.pvsm, corresponding to the state after doing this,
is attached.
Thank you for your help!
Best regards,
Mikhail
On 05/23/2014 06:18 PM, Magician wrote:
Hi Mikhail,
I need to get more information about your problem.
Can you share your dataset or screenshot?
.pvsm state files are more suitable.
Magician
On May 24, 2014, at 5:33, Mikhail Artemyev
<artemiev.mikh...@gmail.com <mailto:artemiev.mikh...@gmail.com>> wrote:
Dear Magician,
Thank you for the explanation and for the hint!
The only issue is that the last step of your algorithm
3. apply Resample With Dataset filter,
not always gives the desired result.
I was able to get the same representation like you showed, but
it was an accidental choice of several Resample With Dataset filters,
and I couldn't repeat it again. My impression is that I have to apply
this filter several times to different sources. Am I right?
Thank you.
Best regards,
Mikhail
On 05/17/2014 12:00 AM, Magician wrote:
Hi Mikhail,
Yes, that's because of the triangulation (or tesselation) of
surface representations.
Most of the 3D programs including ParaView draw objects as groups
of triangles.
That's depends on today's 3D rendering pipelines such as OpenGL,
DirectX, etc.
Please googling the keywords: 'vertex shading'
Even though you read your data as structured grid with point values,
ParaView should immediately triangulate all of the rectangles, and
interpolating
the values between points of the triangles.
# If you visualize cell values, there are no problem caused by
interpolating.
The attached image is one of the solution.
1. read your data
2. make a 'fine resolution' Plane source with same size to the
original (for example, 200x100 structured grid)
3. apply Resample With Dataset filter
The result looks nearly-symmetric for me.
Magician
On May 17, 2014, at 10:40, paraview-requ...@paraview.org
<mailto:paraview-requ...@paraview.org> wrote:
Date: Fri, 16 May 2014 20:40:18 -0500
From: Mikhail Artemyev <artemiev.mikh...@gmail.com
<mailto:artemiev.mikh...@gmail.com>>
To: paraview@paraview.org <mailto:paraview@paraview.org>
Subject: [Paraview] non-symmetric representation of symmetric field
Message-ID: <5376be02.7050...@gmail.com
<mailto:5376be02.7050...@gmail.com>>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
Dear all,
Here is a minimal example of values distributed over a mesh:
0------0------0------0------0
| | | | |
0----0.5---0.75---0.5-----0
| | | | |
0------0------1------0------0
To visualize this field I wrote a .vts file:
<?xml version="1.0"?>
<VTKFile type="StructuredGrid" version="0.1"
byte_order="LittleEndian">
<StructuredGrid WholeExtent="1 5 1 3 1 1">
<Piece Extent="1 5 1 3 1 1">
<PointData Scalars="scalars">
<DataArray type="Float64" Name="sol_" format="ascii">
0 0 1 0 0 0 0.5 0.75 0.5 0 0 0 0 0 0
</DataArray>
</PointData>
<Points>
<DataArray type="Float64" NumberOfComponents="3"
format="ascii">
0 0 0
1 0 0
2 0 0
3 0 0
4 0 0
0 1 0
1 1 0
2 1 0
3 1 0
4 1 0
0 2 0
1 2 0
2 2 0
3 2 0
4 2 0
</DataArray>
</Points>
</Piece>
</StructuredGrid>
</VTKFile>
The visual representation of this field, however, doesn't look
symmetric
(a figure is attached),
although the values are symmetric with respect to a Y-axis
crossing the
center of the domain.
Could you please shed some light on where I am wrong -
in my understanding of visualization technique, or in a way I
pass the
data to ParaView?
I use ParaView 4.1.0 64-bit, Linux.
Thank you.
Best regards,
Mikhail
=
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