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VisIt - Visualization and Data Analysis for Mesh-based Scientific Data
https://visit.llnl.gov
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Lineout / Pick on a 2D surface where a surface normal needs to be generated first #12243

Closed burton29-LLNL closed 2 years ago

burton29-LLNL commented 3 years ago

So I have a surface in a 3D CFD simulation that gets dumped in a separate file. I generate an external surface to define a normal vector and then define a secondary expression like PressureNormal_x, PNormal_y, P*Normal_z. VisIT then graphs out a pseudcolor plot without trouble. Now I want to generate a lineout plot on that surface. So I use Query -->> Lineout, and add 3D endpoints. However the lineout plot doesn't contain any data. How can I get a lineout of those derived expression values. I'm using VisIT 2.13.

biagas commented 3 years ago

Hi Greg,

Would you be willing to share data and steps to reproduce (or sessionfile) on CZ or RZ?

Kathleen

burton29-LLNL commented 3 years ago

I will need to create this unfortunately. It is on another network. I can give you a similar file on Quartz, which you could use. Would that work. The steps were basically what I describe above.

biagas commented 3 years ago

Yes, that will work. Thank you.

burton29-LLNL commented 3 years ago

Tarring up a dump file now on quartz. The geometry is different however, but I don't believe that is a problem.

burton29-LLNL commented 3 years ago

Gave you one file on Quartz. Probably just create a surface normal on it and then try to graph out the value of one coordinate of the normal like normal_x as a pseudo color plot. If you try to interrogate it by putting a lineout on the surface, it will claim there are no values!

biagas commented 3 years ago

Thanks for the data. I should have read your original question more clearly. There is a known bug with Pick and DeferExpression I can see that same bug affecting lineout too.

A workaround would be to save out the surface as vtk file(s), then open it with Visit to perform your queries. A poor workaround, I know, but: with the Pseudocolor plot active, open the 'File->Set save options' window. Change file type to vtk, choose a filename, and save. It may create a .visit file, which you should use to open the data. Pick and Lineout should work on that surface.

burton29-LLNL commented 3 years ago

Ok. Thanks, Kathleen!

============================================ Gregory C. Burton, Ph.D. Turbulence Analysis & Simulation Center (TASC), Head Thermal Fluids Group, Group Leader Computational Engineering Division Lawrence Livermore National Laboratory 7000 East Avenue, L-140 Livermore, California 94550 (925) 422-3515 burton29@llnl.gov https://tasc.llnl.gov

From: Kathleen Biagas notifications@github.com Reply-To: visit-dav/live-customer-response reply@reply.github.com Date: Thursday, September 24, 2020 at 4:11 PM To: visit-dav/live-customer-response live-customer-response@noreply.github.com Cc: "Burton, Greg" burton29@llnl.gov, Author author@noreply.github.com Subject: Re: [visit-dav/live-customer-response] Lineout / Pick on a 2D surface where a surface normal needs to be generated first (#150)

Thanks for the data. I should have read your original question more clearly. There is a known bug with Pick and DeferExpressionhttps://github.com/visit-dav/visit/issues/4571 I can see that same bug affecting lineout too.

A workaround would be to save out the surface as vtk file(s), then open it with Visit to perform your queries. A poor workaround, I know, but: with the Pseudocolor plot active, open the 'File->Set save options' window. Change file type to vtk, choose a filename, and save. It may create a .visit file, which you should use to open the data. Pick and Lineout should work on that surface.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHubhttps://github.com/visit-dav/live-customer-response/issues/150#issuecomment-698633821, or unsubscribehttps://github.com/notifications/unsubscribe-auth/AQ6O67BSAGCAPW5SUVN3IXDSHPGZ5ANCNFSM4RY2NMIQ.

burton29-LLNL commented 3 years ago

Thank you, Kathleen. I will try this and let you know.

Greg

============================================ Gregory C. Burton, Ph.D. Turbulence Analysis & Simulation Center (TASC), Head Thermal Fluids Group, Group Leader Computational Engineering Division Lawrence Livermore National Laboratory 7000 East Avenue, L-140 Livermore, California 94550 (925) 422-3515 burton29@llnl.gov https://tasc.llnl.gov

From: Kathleen Biagas notifications@github.com Reply-To: visit-dav/live-customer-response reply@reply.github.com Date: Thursday, September 24, 2020 at 4:11 PM To: visit-dav/live-customer-response live-customer-response@noreply.github.com Cc: "Burton, Greg" burton29@llnl.gov, Author author@noreply.github.com Subject: Re: [visit-dav/live-customer-response] Lineout / Pick on a 2D surface where a surface normal needs to be generated first (#150)

Thanks for the data. I should have read your original question more clearly. There is a known bug with Pick and DeferExpressionhttps://github.com/visit-dav/visit/issues/4571 I can see that same bug affecting lineout too.

A workaround would be to save out the surface as vtk file(s), then open it with Visit to perform your queries. A poor workaround, I know, but: with the Pseudocolor plot active, open the 'File->Set save options' window. Change file type to vtk, choose a filename, and save. It may create a .visit file, which you should use to open the data. Pick and Lineout should work on that surface.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHubhttps://github.com/visit-dav/live-customer-response/issues/150#issuecomment-698633821, or unsubscribehttps://github.com/notifications/unsubscribe-auth/AQ6O67BSAGCAPW5SUVN3IXDSHPGZ5ANCNFSM4RY2NMIQ.