dupsBetweenGroups: Find rows of dataframe that are duplicated between groups...
In vapniks/mergeutils: Functions to aid merging and checking disparate data

Description Usage Arguments Details Value Author(s)

Find rows of dataframe that are duplicated between groups (indicated by a grouping variable).

1	dupsBetweenGroups(df, idcol, matchall = FALSE)

`df`	A dataframe
`idcol`	The name/index of the grouping variable
`matchall`	If TRUE then find rows that are duplicated across ALL groups, otherwise a row only need be duplicated across 2 groups

Given a dataframe df and a grouping variable idcol, this function finds which rows are the same across different groups, i.e. a row will be chosen if it is identical to another row on all variables apart from the idcol variable which should be different. If ‘matchall’ is TRUE then only rows which are the same across all groups will be chosen, otherwise rows which are the same across at least 2 groups are reported.

This function uses code by Winston Chang pinched from here: http://www.cookbook-r.com/Manipulating_data/Comparing_data_frames/

A logical vector indicating which rows of df are duplicated between groups

Ben Veal

vapniks/mergeutils documentation built on May 3, 2019, 4:33 p.m.