% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/common_id.R
\name{collect.common.id}
\alias{collect.common.id}
\title{Collect Common id}
\usage{
collect.common.id(my.r.data)
}
\arguments{
\item{my.r.data}{A data object(either a data.table or a list).}
}
\value{
A data.table, it includes just one column that named "common_id".
}
\description{
Load the Fadn.raw.rds data (Data Table) or Fadn.str.rds data (List),
then collection the common id from different years on this data.
}
\examples{
collect.common.id(fadn.raw.rds)
## collection the common "id" from the raw rds data
## for 2009-2012 years and country "BEL".
## Return a DT with one column named "common_id".

}
\author{
Xinxin Yang
}