CLsqFit:Fit

CLsqFit:Fit

The Fit method computes the least squares fit using the current data sample and class properties.

Syntax

bSuccess = CLsqFit:Fit()

bSuccess is a success code, with true indicating success and false indicating failure.

Remarks

If the fit fails, false is returned. Error information can be obtained using GetErrChan and GetErrMsg.

Example

This example creates a CLsqFit object, adds some points, and then computes the fit. if the fit is not successful, the script lists error information and exits.

L = CLsqFit:new()	-- create a CLsqFit object
L:SetNumCoefs( 2 )	-- set 2 coefficients to fit a line
L:AddPt( 3.5, 5.15 )	-- add a point for x = 3.5, y = 5.15
L:AddPt( -12, 14 )	-- add a point
L:AddPt( -2, -4.25 )	-- add a point
bSuccess = L:Fit()	-- Fit the line, check the results
if not bSuccess then	-- if fit was not successful, then...
n = L:GetErrChan()	-- get the error channel
s = L:GetErrMsg(n)	-- get the error message
Exit( Sprintf("Error [%d] %s\n", n, s ) )	-- exit the script and list the error message
end
Printf( "Sdev=%lg", L:GetSigmaFit() )	-- list the standard deviation of the fit
	-- do other things with the fit