which parameter is positive on fn optim what is the parameter a skewness in r where is delta in r what is the if of shape parameter zeta what is the parameter rho what is zeta skewness r optimize parameter when a shape parameter is positive i get error message r c++ how to adjust lambda parameter in bfgs what is shape parameter rho where is skewness parameter rho what parameter is positive in r which parameter are not allowed in r optim why do i get error when using optim how do i set an optim parameter what is the difference between an optim and a skewness what is r shape parameter is r parameter rho the same as shape parameter which parameter is in the range in r which parameter is positive for r