Extracts a single from a list of stan output and returns it as a
<data.table>
.
extract_parameter(param, samples, dates)
A <data.frame>
containing the parameter name, date, sample id and
sample value.
Character string indicating the parameter to extract
Extracted stan model (using rstan::extract()
)
A vector identifying the dimensionality of the parameter to extract. Generally this will be a date.