How to write a code for a distribution?

Hello every one,

I would really appreciate if anyone can help me about a code as I am really new in MATLAB. I just want to write a code based on the equation that is a distribution. Thank you!

%This is the equation:
% g(r)=β/(2αγ(1/β)) e^(-((|r-μ|)/α)^β ) [1+erf(k((r-μ)/α))]
% the code is below but there is an error: Error using exp , Not enough input arguments
mu=mean(r);
alfa=input('alfa is considered as:')
beta=input('beta is considered as:')
K=input('k is considered as:')
g(r)=(beta/2.*alfa.*gamma(1/beta)).*exp-(abs (r-mu)./alfa).^beta.*[1-erf(K.*(r-mu./alfa))];

Answer 1

[David Hill]

mu=mean(r);
alfa=input('alfa is considered as:')
beta=input('beta is considered as:')
K=input('k is considered as:')
g(r)=beta/(2*alfa*gamma(1/beta)).*exp(-(abs(r-mu)/alfa).^beta).*(1+erf(K*(r-mu)/alfa));

[Maria Amr]

David Hill Thank you so much1

I truly appreciated if you help me how to fit a curve on it? I I could n't do this with 'makedist', 'fitdist' or distributionfitter'.