event_term: Create an event model term from a named list of variables.

In bbuchsbaum/fmrireg: R package for the anlysis of fmri data

Create an event model term from a named list of variables.

Description

Generates an event model term from a list of named variables along with their onsets, block IDs, and durations. Optionally, a subset of onsets can be retained.

Usage

event_term(evlist, onsets, blockids, durations = 1, subset = NULL)

Arguments

evlist	A list of named variables.
onsets	Numeric vector of onset times (in seconds).
blockids	Numeric vector of block numbers.
durations	Numeric vector of event durations (default is 1).
subset	Logical vector indicating which onsets to retain (default is NULL).

Value

A list with components:

• varname: concatenated variable names,

• events: a list of event objects,

• subset: the retained onsets,

• event_table: a tibble with event information,

• onsets, blockids, durations.

Examples

x1 <- factor(rep(letters[1:3], 10))
x2 <- factor(rep(1:3, each = 10))
eterm <- event_term(list(x1 = x1, x2 = x2),
                    onsets = seq(1, 100, length.out = 30),
                    blockids = rep(1, 30))

bbuchsbaum/fmrireg documentation built on March 1, 2025, 11:20 a.m.