Quantify the smoothness of a vector

## Arguments

- x
Numeric vector (similar to a time series).

- method
Can be

`"diff"`

(the standard deviation of the standardized differences) or`"cor"`

(default, lag-one autocorrelation).- lag
An integer indicating which lag to use. If less than

`1`

, will be interpreted as expressed in percentage of the length of the vector.- iterations
The number of bootstrap replicates for computing standard errors. If

`NULL`

(default), parametric standard errors are computed.- ...
Arguments passed to or from other methods.