Reproducing the "Evaluate" function from "basic fitting" GUI directly in code

Hello Community,

When using the "basic fitting" tool, one has the opportunity once the "fitting" done to evaluate/estimate a value at certain points. I was only able to reproduce this until the plotting part. I cannot figure out how to reproduce the "Evaluate" function programmatically so that I can estimate the value of certain points and use them in my code. The only way I can achieve this for now, is through the GUI i.e from the Figure window's main menu: "tools >> basic fitting" (see picture link) http://i.stack.imgur.com/u6u5v.png

I am not sure I am making myself clear enough, but please do not hesitate to ask if you need more information.

Thank you

Answer 1

[Sarah Wait Zaranek]

You can use the polyfit function to fit your data programatically. You can then use polyval to evaluate the polynomial at a given point.

See doc example here: http://www.mathworks.com/help/matlab/ref/polyfit.html

[Yanick]

Thank you Sarah,

I never realised I could use polyval to achieve that result.

Yanick