The choice_c method fills in the data slot for ref_dc, and then uses the choice_c methods of these object to "select" the data.
# S4 method for report_dc
choice_c(object, dc, horodatedebut, horodatefin,
silent = FALSE)An object of class ref_dc-class
The dc to set
A POSIXt or Date or character to fix the date of beginning of the report
A POSIXt or Date or character to fix the last date of the report
Should program be silent or display messages
An object of class ref_dc-class with slots filled