the definition of parameter from the given distribution
Arguments
parameter
parameter of interest
paramfile
data file to be provided
colnames_paramdistr
list of column names for the parameters that
define the distribution
strategycol
treatment strategy column name
strategyname
treatment strategy name in the column strategycol
Details
This function reads the parameter distribution from a file and return the
parameter obtained
This assumes that the file contains parameter, distribution
colnames for parameter values for the distribution are passed on
to the function assumes the name of each parameter and value are given
in the consecutive columns. Once the expression is created using the
parameters given in the file, it gets checked for correctness of
specifying the distribution in R context using the function
check_estimate_substitute_proper_params and then evaluated.