Fast lagged differences — diff2 • matrixStats

Computes the lagged and iterated differences.

diff2(x, idxs = NULL, lag = 1L, differences = 1L, ..., useNames = TRUE)

Arguments

x: A numeric vector of length N.
idxs: A vector indicating subset of elements to operate over. If NULL, no subsetting is done.
lag: An integer specifying the lag.
differences: An integer specifying the order of difference.
...: Not used.
useNames: If NA, the default behavior of the function about naming support is remained. If FALSE, no naming support is done. Else if TRUE, names attributes of result are set.

Value

Returns a numeric vector of length N - differences.

See also

diff().

Author

Henrik Bengtsson

Examples

diff2(1:10)
#> [1] 1 1 1 1 1 1 1 1 1