TraMineR: seqnum – R documentation

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seqnum

Transform into a sequence object with numerical alphabet.

Description

The function seqnum transforms the provided state sequence object into an equivalent sequence object in which the original alphabet is replaced with an alphabet of numbers ranging from 0 to (nbstates-1).

Usage

seqnum(seqdata, with.missing=FALSE)

Arguments

`seqdata`	a state sequence object as defined by the `seqdef` function.
`with.missing`	logical: Should missing elements in the sequences be turned into numerical values as well? The code for missing values in the sequences is retrieved from the `'nr'` attribute of `seqdata`.

Details

The first state (for example 'A') is coded with the value 0, the second state (for example 'B') is coded with the value 1, etc... The function returns a sequence object containing the original sequences coded with the new numerical alphabet ranging from 0 to (nbstates-1)

Author(s)

Alexis Gabadinho

Examples

data(actcal)
actcal.seq <- seqdef(actcal,13:24)

## The first 10 sequences in the actcal.seq
## sequence object
actcal.seq[1:10,]
alphabet(actcal.seq)

## The first 10 sequences in the actcal.seq
## sequence object with numerical alphabet
seqnum(actcal.seq[1:10,])

## states A,B,C,D are now coded 0,1,2,3
alphabet(seqnum(actcal.seq))

TraMineR

Trajectory Miner: a Toolbox for Exploring and Rendering Sequences

v2.2-1

GPL (>= 2)

Authors

Alexis Gabadinho [aut, cph], Matthias Studer [aut, cph] (<https://orcid.org/0000-0002-6269-1412>), Nicolas M"{u}ller [aut], Reto B"{u}rgin [aut], Pierre-Alexandre Fonta [aut], Gilbert Ritschard [aut, cre, cph] (<https://orcid.org/0000-0001-7776-0903>)

Initial release

2020-10-24