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Extract meta data (e.g. variable and values labels) from an eatGADS object. This can be a GADSdat, an all_GADSdat,
a labels data.frame, or the path to an existing data base.
extractMeta(GADSobject, vars = NULL)Returns a long format data frame with meta information.
Either a GADSdat object or a path to an existing eatGADS data base.
A character vector containing variable names. If NULL (default), all available meta information is returned.
Meta data is stored tidily in all GADSdat objects as a separate long format data frame. This information can be extracted for a single or
multiple variables.
# Extract Meta data from data base
db_path <- system.file("extdata", "pisa.db", package = "eatGADS")
extractMeta(db_path, vars = c("schtype", "sameteach"))
# Extract Meta data from loaded/imported GADS
extractMeta(pisa, vars = c("schtype", "sameteach"))
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