How to do quadratic interpolation in two dimensions on a plane
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Kayson Christensen
el 19 de Mayo de 2022
Comentada: Matt J
el 27 de Mayo de 2022
I'm working on a project which analyzes the air velocity in front of a fan. We took measurments at various positions on an x-y plane placed perpendicular to the air flow, and read velocity in the z-direction only. I tried to create a surface plot to help visually show what the flow is like, but since I only have a few data points it looked really jagged. I then tried to use the interp2 function to try and smooth out the points but it came out like this:
I realize the interp2 is a linear interpolation technique, but is there a way we could do a quadratic fit in two dimensions? Since this should look more like a bell curve, as you would expect. All of this data is recorded in matricies, with identical x and y matricies for the plane, and a U matrix for the velocities. I appreciate any help I can get!
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Torsten
el 25 de Mayo de 2022
As it seems, the planes are in the direction of the outcoming air and not perpendicular to it ? In 1.jpg, one velocity direction (U,V or W) is listed ?
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Matt J
el 24 de Mayo de 2022
I realize the interp2 is a linear interpolation technique
No, you have several alternatives to linear interpolation with interp2,
Maybe try with 'cubic'?
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Matt J
el 27 de Mayo de 2022
You're quite welcome but please Accept-click the answer to indicate that it worked.
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