NLFitfdjac2 Method

public static void fdjac2(
	NLFitLMFunction fcn,
	int m,
	int n,
	double[] x,
	double[] fvec,
	double[] fjac,
	int ldfjac,
	ref int iflag,
	double epsfcn,
	double[] wa
)

Parameters

fcn  NLFitLMFunction

User-supplied subroutine which calculates the functions

m  Int32

m is a positive integer input variable set to the number of functions.

n  Int32

n is a positive integer input variable set to the number of variables. n must not exceed m.

x  Double

x is an input array of length n containing the parameters.

fvec  Double

fvec is an input array of length m which must contain the functions evaluated at x.

fjac  Double

fjac is an output m by n array which contains the approximation to the Jacobian matrix evaluated at x.

ldfjac  Int32

ldfjac is a positive integer input variable not less than m which specifies the leading dimension of the array fjac.

iflag  Int32

iflag is an integer variable which can be used to terminate the execution of fdjac2. see description of fcn.

epsfcn  Double

epsfcn is an input variable used in determining a suitable step length for the forward-difference approximation. this approximation assumes that the relative errors in the functions are of the order of epsfcn. if epsfcn is less than the machine precision, it is assumed that the relative errors in the functions are of the order of the machine precision.

wa  Double

wa is a work array of length m.

Reference