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 Access Fit parameter from another sheet

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T O P I C    R E V I E W
mlt Posted - 03/18/2011 : 06:12:22 AM
Origin Ver. 8.063.988 SR6
Operating System: win XP

Hi,

Sorry for the basic question but I cannot find any solution.
I an using user-defined fitting function which is a sum of various functions to fit my data. After fitting, I want to plot the total fit, but also each of the individual functions.
How can I simply access the fitting parameters in the data sheet to generate these functions ?

Simple example to be more specific:
- my data are col(A) and col(B) in Sheet1
- After fitting I have a FitNL1 sheet with a table "parameters" containing e.g. y0, y1 values of the linear fitting
- I want to create a col(C) in Sheet1 which values would be y0 and a col(D) containing y1*col(A).

I cannot find a way to call y0 and y1 fitting parameter of sheet FitNL1 when writing the function using a "set column value" in sheet Sheet1 but I'm convinced it's possible.

Thanks by advance
2   L A T E S T    R E P L I E S    (Newest First)
mlt Posted - 04/14/2011 : 1:50:59 PM
Hi,

thanks a lot ! I found another solution meanwhile, but this one is
more elegant.
Penn Posted - 03/21/2011 : 03:34:31 AM
Hi,

You can use the getresults X-Function to get the parameters. Take your simple example here: In the Before Formula Scripts text box of Set Column Values dialog, the following two lines are used to get the parameter y0.

getresults tr:=tr1 iw:=[book1]FitNL1!;  // book name here uses Book1
double y0 = tr1.parameters.y0.value;  // get y0

Then in the upper text box of the Set Column Values dialog, type: y0*col(a).

Penn

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