Returns the rs-ids for the chip object, e.g, "rs689", etc Only if these are annotated internally, or else a vector of NAs
rs.id(x, b = TRUE)# S4 method for ChipInfo
rs.id(x, b = TRUE)
a ChipInfo object
logical, whether to show 'b' suffixes on rs.ids which are created in the background to allow duplicate ids to be uniquely represented for lookup and reference purposes.
rs-ids: character vector of IDs (or NAs)