Gaussian decomposition

11 次查看（过去 30 天）
yunle wei
yunle wei 2011-10-15
I am a physics major student.Now I want to use two Gaussian functions to fit the original function(When given the x,y data)in matlab.And this is for the emission spectrum.So,which function should I use(or which way)?Thank you!

请先登录，再回答此问题。

回答（1 个）

Walter Roberson
Walter Roberson 2011-10-15
  3 个评论
显示 1更早的评论
Walter Roberson
Walter Roberson 2011-10-15
Those routines appear to do that. See for example the text
2. Fit a two-component Gaussian mixture distribution. Here, you know the correct number of components to use. In practice, with real data, this decision would require comparing models with different numbers of components.
options = statset('Display','final');
gm = gmdistribution.fit(X,2,'Options',options);
yunle wei
yunle wei 2011-10-17
Thank you.Precisely,now here is a n-2 matrix'X',X(:,1)and X(:,2)represent x and y coordinate,respectively.NOw I want to plot two Gaussian functions that can fit the data metioned above,that is ,the two new functions add together can match the y well enough and I just want the plot of the two new functions.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Smoothing and Denoising 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by