R: Extract the trajectories

trajectories

R Documentation

Extract the trajectories

Description

Transform or extract the trajectories from the given object to a standardized format.

The standardized data format is for method estimation by latrend, and for plotting functions.

Usage

trajectories(
  object,
  id = idVariable(object),
  time = timeVariable(object),
  response = responseVariable(object),
  ...
)

## S4 method for signature 'data.frame'
trajectories(
  object,
  id = idVariable(object),
  time = timeVariable(object),
  response = responseVariable(object),
  ...
)

## S4 method for signature 'matrix'
trajectories(
  object,
  id = idVariable(object),
  time = timeVariable(object),
  response = responseVariable(object),
  ...
)

## S4 method for signature 'call'
trajectories(object, ..., envir)

## S4 method for signature 'lcModel'
trajectories(
  object,
  id = idVariable(object),
  time = timeVariable(object),
  response = responseVariable(object),
  ...
)

Arguments

`object`	The data or model or extract the trajectories from.
`id`	The identifier variable name.
`time`	The time variable name.
`response`	The response variable name.
`...`	Additional arguments.
`envir`	The `environment` used to evaluate the data object in (e.g., in case `object` is of type `call`).

Details

The generic function removes unused factor levels in the Id column, and any trajectories which are only comprised of NAs in the response.

Value