Curve fitting - periodic function
显示 更早的评论
Hi,
I would like to fit a curve to a set of data (I know the function is periodic). The problem is, all the fittings I tried are unable to reproduced the periodicity of the function.
Is there any way to use the curve fitting toolbox to fit a periodic function data set using only 1 period?
Thank you, Alex
采纳的回答
Richard Willey
2012-2-6
Here's a pretty basic example
X = linspace(0, 2*pi, 100);
X = X';
Y = sin(X) + randn(100,1);
foo = fit(X,Y, 'sin1')
scatter(X,Y);
hold on
plot(foo)
更多回答（1 个）
Andrew Newell
2012-2-6
0 个投票
You could try selecting "Sum of sin functions" for the type of fit.
类别
在 帮助中心 和 File Exchange 中查找有关 Interpolation 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
