seq2qha.RdRecodes sequence data into the shape used for qualitative harmonic analysis.
seq2qha(seqdata, periods)a sequence object (see seqdef function).
numeric vector of the first positions of the periods used for recoding
A data frame with one column by combination of period and state (i.e. number of columns = number of periods * number of states in the alphabet).
Robette N., Thibault N. (2008). Comparing qualitative harmonic analysis and optimal matching. An exploratory study of occupational trajectories, Population-E, Vol. 64(3), 533-556. Deville J-C. (1982). Analyse de données chronologiques qualitatives: comment analyser des calendriers ?, Annales de l’INSEE, 45, 45-104. Deville J-C., Saporta G. (1980). Analyse harmonique qualitative, in Data analysis and informatics, E.Diday (ed.), Amsterdam, North Holland Publishing, 375-389.
data(trajact)
seqact <- seqdef(trajact)
#> [>] 6 distinct states appear in the data:
#> 1 = 1
#> 2 = 2
#> 3 = 3
#> 4 = 4
#> 5 = 5
#> 6 = 6
#> [>] state coding:
#> [alphabet] [label] [long label]
#> 1 1 1 1
#> 2 2 2 2
#> 3 3 3 3
#> 4 4 4 4
#> 5 5 5 5
#> 6 6 6 6
#> [>] 500 sequences in the data set
#> [>] min/max sequence length: 37/37
qha <- seq2qha(seqact, periods=c(1,3,7,12,24))
head(qha)
#> Per1St1 Per1St2 Per1St3 Per1St4 Per1St5 Per1St6 Per2St1 Per2St2 Per2St3
#> 1 0 1 0 0 0 0 0.00 1.0 0.00
#> 2 1 0 0 0 0 0 0.75 0.0 0.25
#> 3 1 0 0 0 0 0 0.50 0.5 0.00
#> 4 1 0 0 0 0 0 0.50 0.5 0.00
#> 5 1 0 0 0 0 0 1.00 0.0 0.00
#> 6 1 0 0 0 0 0 1.00 0.0 0.00
#> Per2St4 Per2St5 Per2St6 Per3St1 Per3St2 Per3St3 Per3St4 Per3St5 Per3St6
#> 1 0 0 0 0 1.0 0 0 0.0 0.0
#> 2 0 0 0 0 0.0 1 0 0.0 0.0
#> 3 0 0 0 0 1.0 0 0 0.0 0.0
#> 4 0 0 0 0 0.8 0 0 0.0 0.2
#> 5 0 0 0 0 1.0 0 0 0.0 0.0
#> 6 0 0 0 0 0.8 0 0 0.2 0.0
#> Per4St1 Per4St2 Per4St3 Per4St4 Per4St5 Per4St6 Per5St1 Per5St2 Per5St3
#> 1 0 1.000 0 0 0.000 0 0 1.000 0.000
#> 2 0 0.000 1 0 0.000 0 0 0.857 0.143
#> 3 0 0.333 0 0 0.667 0 0 0.000 0.429
#> 4 0 1.000 0 0 0.000 0 0 1.000 0.000
#> 5 0 1.000 0 0 0.000 0 0 1.000 0.000
#> 6 0 0.833 0 0 0.167 0 0 1.000 0.000
#> Per5St4 Per5St5 Per5St6
#> 1 0 0.000 0
#> 2 0 0.000 0
#> 3 0 0.571 0
#> 4 0 0.000 0
#> 5 0 0.000 0
#> 6 0 0.000 0