event_basis: Create an event set from a ParametricBasis object.

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

Create an event set from a ParametricBasis object.

Description

This is a user-facing wrapper around the internal event() constructor, specifically for creating event sequences modulated by a basis set.

Usage

event_basis(
  basis,
  name = NULL,
  onsets,
  blockids = 1,
  durations = 0,
  subset = NULL
)

Arguments

basis	A ParametricBasis object (e.g., from BSpline, PolynomialBasis).
name	Optional name for the event variable. If NULL, uses basis$name.
onsets	Numeric vector of event onsets (seconds).
blockids	Numeric vector of block IDs.
durations	Numeric vector of event durations (seconds), or a scalar.
subset	Optional logical vector indicating which events to keep. If provided, the vector must match onsets in length and contain no NA values.

Value

An S3 object of class event and event_seq.

Examples

basis <- BSpline(1:21, 3)
onsets <- seq(0, 20, length.out = 21)
blockids <- rep(1, length(onsets))
ebasis <- event_basis(basis, onsets=onsets, blockids=blockids)
print(ebasis)
levels(ebasis)

bbuchsbaum/fmrireg documentation built on June 10, 2025, 8:18 p.m.