R: The time scales of a Lexis object

timeScales {Epi} | R Documentation

## The time scales of a Lexis object

### Description

Functions to get the names and type of the time scales of a `Lexis` object.

### Usage

    timeScales(x)
    timeSince(x)
    tsNA20( x, all.scales=FALSE )

### Arguments

`x` | an object of class `Lexis`.
`all.scales` | Should NAs in all timescales be replaced by 0? If `FALSE` (the default) only timescales defined as time since entry to a state get `NA`s replaced by 0s

### Value

`timeScales` returns a character vector containing the names of the variables in `x` that represent the time scales. Extracted from the `time.scales` attribute of the object.

`timeSince` returns a named character vector, the names being the names of the timescales and the content being the names of the states to which the corresponding timescale is defined as time since entry. For those time scales that are not defined as such an empty string is used. Hence, if none of the timescales are defined as time since entry to a state `timeSince` will return a vector of empty strings.

### Author(s)

Martyn Plummer, Bendix Carstensen

### See Also

`Lexis`, `splitLexis`

[Package Epi version 2.37 Index]