timssg8.select.merge: Select and merge data
In dickli/intsvy2: International Assessment Data Manager 2

Description Usage Arguments Value See Also Examples

timssg8.select.merge selects and merges data from TIMSS G8.

1 2	timssg8.select.merge(folder = getwd(), countries, student = c(), school, math.teacher, science.teacher)

`folder`	Directory path where the data are located. The data could be organized within folders but it should not be duplicated.
`countries`	The selected countries, supplied with the abbreviation (e.g., countries=c("AUT", "BGR") or codes (countries=c(40, 100)). If no countries are selected, all are selected.
`student`	The data labels for the selected student variables.
`school`	The data labels for the selected school variables.
`math.teacher`	The data labels for the selected math teacher variables.
`science.teacher`	The data labels for the selected science teacher variables.

timssg8.select.merge returns a data frame with the selected data from TIMSS G8.

timssg4.select.merge, pirls.select.merge, pisa.select.merge

## Not run: 
timss8g <- timssg8.select.merge(folder=getwd(),
                                 countries=c("AUS", "BHR", "ARM", "CHL"),
                                 student =c("BSDGEDUP", "ITSEX", "BSDAGE", "BSBGSLM", "BSDGSLM"), 
                                 school =c("BCBGDAS", "BCDG03"))

## End(Not run)