merge.unique: Merge data sets. Check that each data set being merged has a...

In mnel/linkedEpi: Tools for linked data analysis

Description

Merge data sets. Check that each data set being merged has a unique key

Usage

  merge.unique(x, y, by, ..., check.unique = TRUE)

Arguments

x,	y data frames, or objects to be coerced to one
by	character indicating which column to merge by (and check uniqueness)
check.unique	logical; if TRUE, x and y are checked to see that the column used for merging is unique

Value

Merged data set

Examples

df.non <- data.frame(ppn = c(1L,1L,2L), var1 = seq_len(3))
df.unique <- data.frame(ppn = seq_len(3), var2 = seq_len(3))
merge.unique(df.unique, df.non, by = 'ppn')
# Error: check.unique(y, id = by) is not TRUE

mnel/linkedEpi documentation built on May 23, 2019, 5:06 a.m.