A data frame with chromosome and genetic and physical
positions (in columns "gmap" and "pmap"), with markers as
row names. If the input cross is not a cross2 object but
rather a map, the output contains chr and pos.
Arguments
cross
Object of class "cross2". For details, see the
R/qtl2 developer guide.
Can also be a map (as a list of vectors of marker positions).
markers
A vector of marker names.
na.rm
If TRUE, don't include not-found markers in the
results (but issue a warning if some markers weren't found). If
FALSE, include those markers with NA for chr and position.