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help on fitting a curve

2 次查看（过去 30 天）
Leah
Leah 2012-7-10
how do you fit data with a peak using a Gaussian curve? If there are two peaks but you only want to fit a curve within a specific range asked by the user, how do you fit a curve?

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回答（1 个）

Wayne King
Wayne King 2012-7-10
编辑：Wayne King 2012-7-10
Do you have the curve fitting toolbox?
If so, cftool has a Gaussian option built in.
Or from the command line:
x = (-3:0.01:3)';
y = exp(-x.^2/2);
yfit = fit(x,y,'gauss1');
  2 个评论
Leah
Leah 2012-7-10
what happens if i have a dimention of double for the x and double for the y, doing that doesn't work is there any other way?
Wayne King
Wayne King 2012-7-11
Do you mean datatype double-precision? why not, the example I have above uses double-precision vectors.

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