/* We put a restriction on the mixture model, so that each group has at
least one observation. This is done by *pretending* that we have
some extra data: a censored indicator of the number of observations
in each group that tells us that there is at least one member.
This may or may not be cheating.
model in "eyes2.bug"
data in "eyes-data.R"
parameters in "eyes-inits.R"
monitor P, thin(20)
monitor lambda, thin(20)
monitor sigma, thin(20)