Helper function for eval_init_one_param
Usage
eval_init_one_param(param_init, param_name, sdata)
Arguments
- param_init
array, numeric, or function to initialize parameter
- param_name
character parameter name defined in the stan model
- sdata
list generated by Stan for the model data info
Value
numeric or array. If the parameter is of the form b_<param>
then brms expects an array of dimension sdata$K_<param>, otherwise
return a numeric value.