Drexel dragonThe Math ForumDonate to the Math Forum


Math Forum
 Ask Dr. Math
 Discussions
 Internet Newsletter
 MathTools
 Problems of the Week
 Teacher2Teacher
 Teacher Exchange
 Workshops

Search All of the Math Forum:
Browse our Internet Mathematics Library

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


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

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

Advanced Search
Reply to this Topic Reply to this Topic

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
ariel

Posts: 4
Registered: 12/8/12
fitting ( cftool )
Posted: Dec 8, 2012 8:22 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

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 ?

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2013. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.