Drop the first element of a vector or matrix
A utility function, dropFirst drops the first element of a
vector or matrix, retaining the correct time series attributes, in
case the argument is a time series object.
dropFirst(x)
x |
a vector or matrix. |
The function returns x[-1] or x[-1,], if the argument is
a matrix. For an argument of class ts the class is preserved,
together with the correct tsp attribute.
Giovanni Petris GPetris@uark.edu
(pres <- dropFirst(presidents)) start(presidents) start(pres)
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