I have f(X,Y) and would like to simulate a marginal f(x) with the Gibbs sampling where conditional distribution of X is Binomial and conditional distribution of Y is Beta.
I would use PROC MCMC, which supports Gibbs sampling.
If you insist on using SAS/IML, there are several papers on the topic. Search lexjansen.com for
"Gibbs sampling" iml
and you will find several papers that can get you started.
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