A panel data set in long form. See embedded sgpData_LONG data set for an exemplar.
var.names
A list that includes all required columns that do not match the SGP conventions, as well as all secondary columns needed
for summarization and reporting.
fix.duplicates
Argument for future functionality intended to deal with duplicate cases in supplied long data.
Value
Function returns an object of class SGP. The long data is
in the data slot.