I am trying to obtain the grafic of a pdf . but this error keeps showing . Here is the code MXN.fd = function(x,alpha,beta,mu,delta) { A = (2*cos(beta/2))^(2*delta) B = 2*alpha*pi*gamma(2*delta) C = (beta*(x-mu))/alpha D = abs(gamma(delta + (complex(0,0,1)*(x-mu))/alpha)^2) M = A/B*exp(C)*D M plot(x,M,type="l",lwd=2,col="red")
} alpha = 0.02612297 beta = -0.50801886 mu = 0.00575829917 delta = 0.67395 x = x=seq(-0.04,0.04,length=200) MXN.fd(x,alpha,beta,mu,delta) i think the problem is the gamma function, does anyone know how to compute gamma with imaginary numbers? thanks in advance -- View this message in context: http://r.789695.n4.nabble.com/Error-in-gamma-delta-complex-0-0-1-x-mu-alpha-unimplemented-complex-function-tp4526695p4526695.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.