'Detrending' is often used before the signal power calculation.

## Usage

`detrend(x, trend = c("constant", "linear"), break_points = NULL)`

## Arguments

- x
numerical or complex, a vector or a matrix

- trend
the trend of the signal; choices are

`'constant'`

and`'linear'`

- break_points
integer vector, or

`NULL`

; only used when`trend`

is`'linear'`

to remove piecewise linear trend; will throw warnings if`trend`

is`'constant'`