Fitting line to a curve

1 次查看（过去 30 天）
David Harra
David Harra 2022-4-21
编辑： Matt J 2022-4-22
I have a plot of attenuation V frequency and I am wondering if there is a way I can fit a straight line the follows the upper trajectory of the graph, so that you would see the line increase and then level off. I have tried a few methods but getting lines through the middle etc. Many Thanks
  3 个评论
显示 1更早的评论
David Harra
David Harra 2022-4-21
Thanks I will keep this in mind for future. How do I include my data as a .mat file?
Dave :)
Matt J
Matt J 2022-4-22
编辑：Matt J 2022-4-22
The toolbar has a a file attachment option.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

John D'Errico
John D'Errico 2022-4-21
Easy.
  1. Use findpeaks, to locate the sequence of points that represent the successive maxima of the curve.
  2. Use an interpolating spline to then interpolate those points. A tool like interp1 will be simplest. Specify the 'pchip' option.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Interpolation 的更多信息

标签

产品


版本

R2021b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by