[General] Extract Points along a polyline

AshwaniAssam · April 28, 2014, 14:36

Hi,

I want to know how do we extract points along a polyline as we can do in TecPlot. We can do in Paraview along a straight line, but how to do along a curve.
My problem is I want to plot the flow properties along the NACA aerofoil curved surface.

Thanks.

wyldckat · April 28, 2014, 16:57

Greetings Ashwani,

Here are two threads from which you can find possible solutions for your problem:

The other possibility is that once you have your curve, you can simply use the "Plot Data" filter or use the "File -> Save Data" menu entry to export the data to CSV.

Best regards,
Bruno

AshwaniAssam · April 30, 2014, 16:01

Thank you for your reply. I am sorry for replying late.
I found it difficult to apply the method suggested above, as I had multiple blocks in that region. Thus, I have different zone sharing the curved surface area.

At present I am continuing with tecplot. I use in it Extract points along polyline. This is similar to the paraview command of plotting which is only for a straight line.

with regards,
Ashwani

wyldckat · May 1, 2014, 06:43

Hi Ashwani,

Mmm... the filter "Merge Blocks" could help. The downside is that it might require a considerable amount of memory to perform the operation, depending on the complexity of the case.

Best regards,
Bruno

AshwaniAssam · May 1, 2014, 15:09

Thank you this works. I am having a problem with deciding about x-axis. I want in terms of x-co-ordinate. I would check with cgns file format solution and report it.

April 28, 2014, 14:36	Extract Points along a polyline	#1
AshwaniAssam Senior Member Ashwani Join Date: Sep 2013 Location: Hyderabad Posts: 154 Rep Power: 14	Hi, I want to know how do we extract points along a polyline as we can do in TecPlot. We can do in Paraview along a straight line, but how to do along a curve. My problem is I want to plot the flow properties along the NACA aerofoil curved surface. Thanks.

April 28, 2014, 16:57		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,981 Blog Entries: 45 Rep Power: 130	Greetings Ashwani, Here are two threads from which you can find possible solutions for your problem: http://www.cfd-online.com/Forums/ope...-airfoils.html http://www.cfd-online.com/Forums/ope...over-line.html The other possibility is that once you have your curve, you can simply use the "Plot Data" filter or use the "File -> Save Data" menu entry to export the data to CSV. Best regards, Bruno

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April 30, 2014, 16:01		#3
AshwaniAssam Senior Member Ashwani Join Date: Sep 2013 Location: Hyderabad Posts: 154 Rep Power: 14	Thank you for your reply. I am sorry for replying late. I found it difficult to apply the method suggested above, as I had multiple blocks in that region. Thus, I have different zone sharing the curved surface area. At present I am continuing with tecplot. I use in it Extract points along polyline. This is similar to the paraview command of plotting which is only for a straight line. with regards, Ashwani

May 1, 2014, 06:43		#4
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,981 Blog Entries: 45 Rep Power: 130	Hi Ashwani, Mmm... the filter "Merge Blocks" could help. The downside is that it might require a considerable amount of memory to perform the operation, depending on the complexity of the case. Best regards, Bruno

May 1, 2014, 15:09		#5
AshwaniAssam Senior Member Ashwani Join Date: Sep 2013 Location: Hyderabad Posts: 154 Rep Power: 14	Thank you this works. I am having a problem with deciding about x-axis. I want in terms of x-co-ordinate. I would check with cgns file format solution and report it.