Brms initialization changing found vs declared dimension

Interfaces brms
, ,
3

Thanks for sharing the reproducible example.

I ran it quickly and these were all (or mostly all) during warmup, so nothing to worry about for that one.

But for the ones that error:

When I see errors like this

variable name=b_A; dims declared=(1); dims found=()

that usually suggests to me that we need to wrap the R variable in array().

Can you try wrapping each of these list elements in array()? So the init argument would be:

init = function() {
  list(
    b_A = array(rgamma(1, 1)),
    b_B = array(rgamma(1, 1)),
    b_C = array(rgamma(1, 1))
  )
}

I think that should get it to run, but what I don’t understand is why it would have worked with previous versions and not after updating (unless I’m misunderstanding the situation). As far as I know we haven’t changed anything in CmdStanR between versions that would affect this.

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