Special Nonlinear Fitting?
- To: mathgroup at smc.vnet.net
- Subject: [mg2368] Special Nonlinear Fitting?
- From: f91el at efd.lth.se (Erik Lindahl)
- Date: Sun, 29 Oct 1995 22:48:14 -0500
- Organization: Lund Institute of Technology, Sweden
Hi,
I need to do a nonlinear fitting of data to a function, where I can't get
an explicit expression for the functions value.
Let me give you an example:
Assume I have the data point as pairs {x,y}
I want to "solve" the following relationship for the parameters a and b:
Y^2/X*f[Y^2/(X*a)]=b*given function of X.
with f[z]=z/Sqrt[1+z^2]...
Is there any procedure capable of this?
I must be able to enter an equation as the model, and state that "Y" is the
data value at each point.
Ideas, anybody?
Regards,
Erik
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Erik R. Lindahl f91el at efd.lth.se
Lund Institute of Technology, Lund, SWEDEN