Re: [Paraview] non-symmetric representation of symmetric field
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 ||| || 00.5---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 = ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic
Re: [Paraview] non-symmetric representation of symmetric field
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 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 wrote: Date: Fri, 16 May 2014 20:40:18 -0500 From: Mikhail Artemyev artemiev.mikh...@gmail.com To: paraview@paraview.org Subject: [Paraview] non-symmetric representation of symmetric field Message-ID: 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 ||| || 00.5---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 ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
[Paraview] non-symmetric representation of symmetric field
Dear all, Here is a minimal example of values distributed over a mesh: 0--0--0--0--0 ||| || 00.5---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 ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
