cderiv | R Documentation |
Take the central derivative of numeric vectors by averaging the forward and backward differences.
cderiv(x)
x |
A numeric matrix, or a vector which will be converted to a single-column matrix. |
A matrix or vector the same dimensions as x
, with the
derivative taken for each column of x
. The first and last rows may
need to be deleted, depending on the application.
x <- cderiv(seq(5))
stopifnot(all(x == c(.5, 1, 1, 1, .5)))
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