View source: R/stemInclusionTuples.R
stemInclusionTuples | R Documentation |
If item-stimulus hierarchies are stored in a single stimulus column,
stemInclusionTuples
transforms this format into item pairs ('tuples').
stemInclusionTuples(items, idCol = "ID", stemCol)
items |
A |
idCol |
character or integer indicating the item ID column in |
stemCol |
A column in |
Inclusion tuples can be used by itemInclusionConstraint
to set up inclusion constraints.
A data.frame
with two columns.
# Example data.frame
inclDF <- data.frame(ID = paste0("item_", 1:6),
stem = c(rep("stim_1", 3), "stim_3", "stim_4", "stim_3"),
stringsAsFactors = FALSE)
# Create tuples
stemInclusionTuples(inclDF, idCol = "ID", stemCol = "stem")
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