Subtract offset or trend from time-domain signals contained in
`iddata`

objects

`detrend`

subtracts offsets or linear trends from
time-domain input-output data represented in `iddata`

objects.
`detrend`

either computes the trend data to subtract, or
subtracts the trend that you specify.

For a more general detrending function that does not require
`iddata`

objects, see `detrend`

.

`data_d = detrend(data)`

`data_d = detrend(data,Type)`

`[data_d,T_r] = detrend(___)`

`data_d = detrend(data,1,brkpt)`

computes and subtracts the piecewise-linear trends for data with segmented
trends, using the breakpoints that you define with
`data_d`

= detrend(`data`

,1,`brkpt`

)`brkpt`

.

The second argument, which corresponds to `Type`

, must be
`1`

.

With this syntax, you cannot retrieve the resulting piecewise-linear trend information as an output.