Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

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: 2D gaussian fitting using Surface Fitting Tool
Replies: 10   Last Post: Jan 20, 2014 11:10 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Shu-huai ZHANG

Posts: 2
Registered: 6/14/10
Re: 2D gaussian fitting using Surface Fitting Tool
Posted: Jun 14, 2010 10:56 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Hi, Tim Balmer:

I am a newcomer about MATLAB. Now want to do the same thing like you.
Could you give me some help?

Thanks a lot.

"Tim Balmer" <tbalmer2@student.gsu.edu> wrote in message <hukkmu$pcd$1@fred.mathworks.com>...
> I'm trying to fit a 2D gaussian to a surface using the Surface Fitting Tool. I choose the custom equation option and enter this formula: A*exp(-x^2/(2*sigmax^2)-y^2/(2*sigmay^2))
>
> I think that either my equation is wrong or I am not using the Surface Fitting Tool properly because it generates a flat surface that doesn't fit at all and has a negative R-square value.
>
> Any help would be greatly appreciated!
>
> Thanks!




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

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.