pedrenum {dmm}

Renumbers the Id, SId, and DId columns of a dataframe

Description

Converts the identifiers in column Id of a dataframe into numeric codes which form a sequence from 1 to n with unit increments and no duplicates. Converts the identifiers in columns SId and DId to correspond.

Usage

pedrenum(df)

Arguments

df

A dataframe containing columns named Id, SId, and DId as required to include pedigree information

Details

It is assumed that any identifiers in columns SId or DId also appear in column Id. If not use function mdf() instead of function pedrenum(). Function mdf() actually calls function pedrenum(), but ensures that the above requirement is met first.

Value

A dataframe containing the renumbered Id, SId, and DId columns, as well as any other columns present in argument df

Note

Function pedrenum() is an internal function called by function mdf(). It is made available because it may be useful in cases where the complex dataframe manipulations performed by function mdf() are not required.

Author(s)

Neville Jackson

See Also

Function mdf()

Examples

library(dmm)
data(dt8bal.df)
# note these data do not need renumbering, but will use as a demo
tmprenum <- pedrenum(dt8bal.df)
# In this case all that happens is that SId, which was a factor in dt8bal.df, is
# converted back to int. The numeric codes are unaltered.
rm(dt8bal.df)
rm(tmprenum)