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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: fitting ( cftool )
Replies: 4   Last Post: Dec 10, 2012 7:55 AM

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ariel

Posts: 4
Registered: 12/8/12
fitting ( cftool )
Posted: Dec 8, 2012 8:22 AM
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im trying to do a fitting between a vector and a function .

my vector is a intensity summed by 20 degree angle (160-180) as a function of the beam radius, as the following pics describe :
this is the picture : http://postimage.org/image/baff0lf63/
the imagesc pic after cutting by angle plus intensity graph by radius ( the angle is summed ) : http://postimage.org/image/s9l2d8j5b/

my try to to do fitting with cftool :
http://postimage.org/image/6so1ugaeh/

the function i try to do fitting with : sin(b*sin(atan(x./0.05)).^2).^2+c which i took from theory .

as you can see the fitting is total joke, and ideas ?





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