How to fit a curve in Paraview

ParaView Support
1

Hello everyone! I use Paraview to visualize my compution result. And I make a contour in my Paraview.This is my result.However, I want to fit curve which is above the green line as a quartic polynomial. I am confused about how to do that. I also want to know if I can extract the point coordinate on this curve so that I can fit this curve using python or matlab. thanks a lot!

78IMZKRJM4XZDY}Hello everyone! I use Paraview to visualize my compution result. And I make a contour in my Paraview.This is my result.However, I want to fit curve which is above the green line as a quartic polynomial. I am confused about how to do that. I also want to know if I can extract the point coordinate on this curve so that I can fit this curve using python or matlab. thanks a lot! 2E7EF
78IMZKRJM4XZDY}Hello everyone! I use Paraview to visualize my compution result. And I make a contour in my Paraview.This is my result.However, I want to fit curve which is above the green line as a quartic polynomial. I am confused about how to do that. I also want to know if I can extract the point coordinate on this curve so that I can fit this curve using python or matlab. thanks a lot! 2E7EF1619×1032 83.2 KB

3

I think you should do that in two steps:

  • cut your data to keep only the part of interest, with the Clip filter.
  • use a Programmable Filter to manipulate the actual data (so coordinates).

See programmable filter documentation: 5. Programmable Filter — ParaView Documentation 5.11.0 documentation

1 Like
4

Thanks a lot! I have made it!