Generalized Gamma Distribution Model

sir I want to compute the estimation parameter of wavelet sub-band coefficient distribution by fitting with Generalized Gamma Distribution Model. so in this regard how to fix a,d,p('a' and 'd' are called the shape parameters and 'p' is called the scale parameters)

[Andreas Haselsteiner]

I just submitted a custom implementation of the generalized gamma distribution to Matlab's File Exchange: https://de.mathworks.com/matlabcentral/fileexchange/73550-generalized-gamma-distribution-in-matlab

Here is an example how to estimate the parameters using Maximum Likelihood Estimation:

rng('default'); % For reproduceability.

pdTrue = GeneralizedGamma(1.4, 1.0, 1.6);
n = 10000;
sample = pdTrue.drawSample(n);

pdEstimated = GeneralizedGamma();
pdEstimated.fitDist(sample)

PS: I realize that this is an old question, but it still got a fair amount of views in the last 30 days.