It looks to me like you need to add "x" to the arguments in your
call to "constrOptim", something like the following:
constrOptim(beta_i, myFunction, NULL, ui, ci, mu = 1e-04, control = list(),
method = "Nelder-Mead",outer.iterations = 100, outer.eps = 1e-05, x=x)
The first "x"
I have a function myFunction(beta,x) where beta is a vector of coefficients
and x is a data frame (think of it as a matrix). I want to optimize the
function myFunction() by ONLY changing beta, i.e. x stays constant, with 4
constraints. I have the following code (with a separate source file for the
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