Message Boards Message Boards

Simultaneous fitting to multiple data sets with multiple variables and para

Posted 10 years ago

I am trying to fit two data sets to a function model described below which share a few common parameters. Say I have two functions with some common parameter(s)

f[x,y]:= aExp[-x]Sin[b*y] + c g[x,y]:= dExp[-x]Sin[b*y] + c

I generated two model data sets using a functional form similar to the ones above and tried to fit the data using NonlinearModelFit. But NonlinearModelFit fails to converge within the prescribed iterations and confidence interval.

I tried checking the threads (http://mathematica.stackexchange.com/questions/15905/combined-fitting-via-nonlinearmodelfit or http://forums.wolfram.com/mathgroup/archive/2011/Sep/msg00555.html or http://community.wolfram.com/groups/-/m/t/135933) on similar discussions but could not solve my problem. Any suggestions would be welcome.

Thanks in advance.

Arijit.

POSTED BY: Arijit Sharma
2 Replies
Posted 10 years ago
POSTED BY: Arijit Sharma
Posted 10 years ago

Arijit, do you have any sample data and code?

POSTED BY: Priyan Fernando
Reply to this discussion
Community posts can be styled and formatted using the Markdown syntax.
Reply Preview
Attachments
Remove
or Discard

Group Abstract Group Abstract