Curve fitting

  • I
  • Thread starter sounouhid
  • Start date
  • #1
22
2
Hello everyone
help please
I need to fit experimental data with a theoretical model using the matlab software what is the best way to do it?
thx for advance
 

Answers and Replies

  • #2
12,484
6,267
Why not try plotting the experimental data vs the theoretical data to see where they differ?
 
  • #3
22
2
thank you
but i don't have the the theoretical data .i just have the model ,I'm looking for the fit parameters
 
  • #4
12,484
6,267
Can't you run the model with input parameters matching the ones recorded when you did the experiment and then plot the relevant model output?
 
  • #5
22
2
yes i did it using the least squares curve fit ,but the fit parameters are not constant they are function of the input.
 
  • #6
798
34
@ sounouhid : One cannot answer to your question without a clear description of your problem. What kind of "theoretical model" are you talking about ? What kind of data ? And more details on the context of the problem are essential. The fitting methods are numerous and depends on the context. A whole book should not large enough to answer if the problem is not restricted. For example, some procedures of fitting to several models are available in : https://fr.scribd.com/doc/14674814/Regressions-et-equations-integrales .(paper in French with some parts in English. All procedures are understandable in English)
 
  • Like
Likes sounouhid

Related Threads on Curve fitting

  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
4
Views
4K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
5
Views
14K
Replies
3
Views
2K
  • Last Post
Replies
1
Views
3K
Replies
1
Views
2K
Replies
2
Views
2K
Replies
5
Views
883
  • Last Post
Replies
4
Views
7K
Top