what function of this? (weibul)

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uncung fgv
uncung fgv 2012-4-25
any one can tell me what function of this?
h=fittype('1-exp(-a*x^b)');
[Y,par]=fit(r',P',h,'StartPoint',[1 1]);
Y
par
Pfit=Y(r);

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回答（1 个）

Thomas
Thomas 2012-4-25
don't really understand your question, but I guess you want to to know what functions are being used above:
fittype: Fit type for curve and surface fitting
http://www.mathworks.com/help/toolbox/curvefit/fittype.html
fit: Fit curve or surface to data
http://www.mathworks.com/help/toolbox/curvefit/fit.html
What you are doing is trying to get the fittype for your data based on the expression 1-exp(-a*x^b) and then using that fittype which you have in 'h' now to fit a curve to your data using
[Y,par]=fit(r',P',h,'StartPoint',[1 1]);

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