tiers_add {act}

Add tiers

Description

Adds a tiers in all transcript objects of a corpus. If tiers should be added only in certain transcripts, set the parameter filterTranscriptNames. In case that you want to select transcripts by using regular expressions use the function act::search_makefilter first.

Usage

tiers_add(
  x,
  tierName,
  tierType = c("IntervalTier", "TextTier"),
  absolutePosition = NULL,
  destinationTier = NULL,
  relativePositionToDestinationTier = 0,
  insertOnlyIfDestinationExists = FALSE,
  filterTranscriptNames = NULL,
  skipIfTierAlreadyExists = TRUE
)

Arguments

x

Corpus object.

tierName

Character string; names of the tier to be added.

tierType

Character string; type of the tier to be added.

absolutePosition

Integer; Absolute position where the tier will be inserted. Value 1 and values beloe 1 will insert the tier in the first position; To insert the tier at the end, leave 'absolutePosition' and 'destinationTier' open.

destinationTier

Character string; insert the tier relative to this tier.

relativePositionToDestinationTier

Integer; position relative to the destination tier; 1=immediately after; 0 and -1=immediately before; bigger numbers are also allowed.

insertOnlyIfDestinationExists

Logical; if TRUE the new tier will only be added if the destination tier 'destinationTier' exists in the transcript object. If FALSE the new tier will only be added in any case. If the destination tier 'destinationTier' does not exist in the transcript object, the tier will be inserted at the end.

filterTranscriptNames

Vector of character strings; names of the transcripts to be modified. If left open, the tier will be added to all transcripts in the corpus.

skipIfTierAlreadyExists

Logical; if TRUE the new tier will be skipped if a tier with this name already exists in the transcript; if FALSE an error will be raised.

Details

You can either insert the new tier at a specific position (e.g. 'absolutePosition=1') or in relation to a existing tier (e.g. destinationTier='speaker1'). To insert a tier at the end, leave 'absolutePosition' and 'destinationTier' open.

Results will be reported in @history of the transcript objects.

Value

Corpus object.

See Also

tiers_delete, tiers_rename, tiers_convert, tiers_sort

Examples

library(act)

# --- Add new interval tier.
# Since not position is set it will be inserted in the end, by default.
x <- act::tiers_add(examplecorpus,
					tierName="TEST")
#check results
x@history[length(x@history)]
#have a look at the first transcript
x@transcripts[[1]]@tiers
#--> New tier is inserted in the end.

# --- Add new interval tier in position 2
x <- act::tiers_add(examplecorpus,
					tierName="TEST",
					absolutePosition=2)
#check results
x@history[length(x@history)]
#have a look at the first transcript
x@transcripts[[1]]@tiers
#--> New tier is inserted as second tier.


# --- Add new interval tier at the position of "Entrevistador", only if this tier exists,
# If the destination tier does not exist, the new tier will NOT be inserted.

#Have a look at the first and the second transcript. 
examplecorpus@transcripts[[1]]@tiers
#Transcript 1 does contain a tier "Entrevistador" in the first position.
examplecorpus@transcripts[[2]]@tiers
#Transcript 2 does contain a tier "Entrevistador" in the first position.

#Insert new tier
x <- act::tiers_add(examplecorpus,
					tierName="TEST",
					destinationTier="Entrevistador",
					relativePositionToDestinationTier=0,
					insertOnlyIfDestinationExists=TRUE)

#Check results
x@history[length(x@history)]
#Have a look at the transcript 1:
# Tier 'TEST' was in first position (e.g. where 'Entrevistador' was before).
x@transcripts[[1]]@tiers
#Have a look at the transcript 2:
#Tier 'TEST' was not inserted, since there was no destination tier 'Entrevistador'.
x@transcripts[[2]]@tiers

# --- Add new interval tier AFTER tier="Entrevistador"
# If the destination tier does not exist, the new tier will be inserted at the end in any case.
x <- act::tiers_add(examplecorpus,
					tierName="TEST",
					destinationTier="Entrevistador",
					relativePositionToDestinationTier=1,
					insertOnlyIfDestinationExists=FALSE)
#check results
x@history[length(x@history)]
#Have a look at the transcript 1:
# Tier 'TEST' was inserted after the tier 'Entrevistador'.
x@transcripts[[1]]@tiers
#Have a look at the transcript 2:
#Tier 'TEST' was insertedat the end.
x@transcripts[[2]]@tiers