seqpm: Find substring patterns in sequences

In TraMineR: Trajectory Miner: a Sequence Analysis Toolkit

Find substring patterns in sequences

Description

Search for a pattern (substring) into sequences.

Usage

 seqpm(seqdata, pattern, sep="")

Arguments

seqdata	a sequence object as defined by the seqdef function.
pattern	a character string representing the pattern (substring) to search for.
sep	state separator used in the pattern definition.

Details

This function searches a pattern (a character string) into a set of sequences and returns the results as a list with two elements: 'Nbmatch' the number of occurrences of the pattern and 'MatchesIndex' the vector of indexes (row numbers) of the sequences that match the pattern (see examples below).

Value

a list with two elements (see details).

Author(s)

Alexis Gabadinho

Examples

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

## search for pattern "DAAD"
## (no work-full time work-full time work-no work)
## results are stored in the 'daad' object
daad <- seqpm(actcal.seq,"DAAD")

## Looking at the sequences
## containing the pattern
actcal.seq[daad$MIndex,]

## search for pattern "AD"
## (full time work-no work)
seqpm(actcal.seq,"AD")

TraMineR documentation built on Dec. 8, 2024, 3:01 p.m.