Auto-guess non-linear fit coefficients

Supriya Balaji
Posts: 45
Joined: 2013-05-21
Location: United States

How does Igor auto-guess coefficients for curve fitting? What is the algorithm used?


Posts: 1966
Joined: 2007-06-29
Location: United States

Each fitting function has its own hand-coded and carefully tweaked algorithm.

John Weeks
WaveMetrics, Inc.
support@wavemetrics.com


Supriya Balaji
Posts: 45
Joined: 2013-05-21
Location: United States

Thanks John. Is there a specific routine?


HJDrescher
Posts: 364
Joined: 2015-01-20
Location: Germany

I guess Wavemetrics payed some employees quite a bit of money to code this by hand and to carefully tweak the algorithm :-)

Maybe if you post your formula, somebody has an idea how to do sufficient initial guesses...

HJ


Posts: 1966
Joined: 2007-06-29
Location: United States

HJDrescher wrote:
I guess Wavemetrics payed some employees quite a bit of money to code this by hand and to carefully tweak the algorithm :-)

Maybe if you post your formula, somebody has an idea how to do sufficient initial guesses...


Exactly.

John Weeks
WaveMetrics, Inc.
support@wavemetrics.com


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