get_twinmothers: Get IDs of twinmothers
In johow/kinlab: Kinship and Reproduction in Historical Populations

Returns a vector of twinmother IDs

1 2	get_twinmothers(df = NULL, var_bdate = NULL, var_mother = NULL, numeric_output = FALSE)

`df`	A dataframe containing birth dates of offspring and mother IDs
`var_bdate`	Variable for offspring's birth date
`var_mother`	Variable of mother ID
`numeric_output`	Should index be numeric

## Not run: 
grap_ped(1067, df_ped)

## End(Not run)

johow/kinlab documentation built on July 5, 2019, 4:23 p.m.

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