CHMT: This function avoids double counting of China.
Description
This function should only be used when performing aggregations.
Usage
CHMT(var, data, year = "Year")
Arguments
var
The variables that require to be sanitized.
data
The data frame which contains the data
year
The column which correspond to the year.
Details
We decide to use the smaller subsets in the regional level because
weighting variable may not exist for other variables for the
larger subsets.
The function only work for FAOST_CODE, if the country coding
system is not in FAOST_CODE then use the translateCountryCode
function to translate it.