Description Usage Arguments Details Value See Also Examples
Determines which elements of a vector or data frame are duplicates of other elements, and returns either a logical vector indicating which elements (rows) are duplicates, or the duplicated elements (rows) themselves.
1 | duplicates(x, xret = FALSE, ...)
|
x |
a vector or a data frame or an array or NULL. |
xret |
logical, default |
... |
additional arguments passed to
|
Behavior nearly identical to duplicated
, except
returns ALL duplicated elements, not simply the first.
Numeric vector indexing rows (sample units) in spe1
which
are nearest compositional neighbors of spe2
. The order
corresponds to row order in spe2
.
duplicated
, and
https://stackoverflow.com/questions/7854433/.
1 2 3 4 5 6 7 8 9 | x <- c('a','b','c','c','c')
y <- data.frame(x, y=c(1,2,4,4,5))
z <- as.matrix(y)
duplicates(x) # duplicate_s_
duplicated(x) # compare with duplicate_d_
duplicates(y)
duplicated(y)
duplicates(z)
duplicated(z)
|
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