save_in_data_dir: Save given variable in package data directory
Description
File is named varname.RData with an optional suffix before .RData
Usage
save_in_data_dir(var_name, suffix = "")
Arguments
var_name
character or symbol, e.g. "myvar" or myvar, either of
which would find myvar in the parent environment, and save it as
myvar.RData in package_root/data.