       Putting NonLinear fit into a For[ ] Loop

• To: mathgroup at smc.vnet.net
• Subject: [mg44422] Putting NonLinear fit into a For[ ] Loop
• From: mhd <mhd at wsu.edu>
• Date: Sat, 8 Nov 2003 04:51:03 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

```Seems like this should have been easy to Find a mathematica eg...

I have hunderds of data files, each with two "gausian peaks"
I want to import the files Fit one Peak and subtract it from the file
leaving the other peak. I can get the code to work fine if I do only one
file. I put it into the For [ ] Loop and get stuck. I am testing with 5
data files, all imports fine in the loop then hits the below code and I get
one fit out or none and errors

any suggestion on how to do this or a link to an example...
Thanks

Dudley
Dept of Physics
WSU

Clear["Ffit*"]; Clear["fit*"];
For[i = 1, i <= Length[datasetnames], i++,

Needs["Statistics`NonlinearFit`"]

Evaluate[ToExpression["fitted" <> ToString[i]]] =
NonlinearFit[Evaluate[ToExpression["fluordata" <> ToString[i]]],
yo+Amp*E^((-E^((-x + 9.8)/w)) - (x - 9.8)/w + 1), x, {y0,Amp,w},
MaxIterations -> 1800]

]  (*  < --- Closes For[] statement  *)

Set::write: Tag Times in fitted1Null is Protected.   more...

```

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