Just to set things straight:
The error message "Error in nleqslv(xstart, fun) : Length of fn result <>
length of x!"
is issued by the underlying nleqslv C function.
refers to the second argument of function nleqslv which is named fn.
It is not issued by R itself.
Other have already pointed
Maybe it's simpler to point out that nonlinear EQUATIONS need n equations for n
unknowns.
4 only equals 2 through the looking glass.
Alternatively, maybe the OP wants to adjust the 2 parameters to best fit the 4
relationships, in which
case nlsr package function nlfb() would be appropriate.
Santi,
In the second line of your function you have the following:
f <- numeric(length(x))
This sets the length of this numeric vector (i.e., "f") to the length of the
vector "x".
Later, inside the function you assign to values to 4 elements of the vector "f".
This assumes that "f" is at least
Dear all,
I am relatively new to R and have had some difficulty in understanding an error
i get when running a code to solve a system of non-linear equations, with four
equations and two variables.
This is my code:
ALPHA <- c(-0.0985168033402, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4)
BETA <-
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