Construct a keyed event table

Event rows retain their natural cardinality and are not expanded to acquired volumes. Entity-key columns are validated against a study when attached.

Usage

event_table(data, key = "event_id", metadata = list())

Arguments

data

Scalar event annotations.

key

Stable event-key column.

metadata

Serializable event-table metadata.

Value

An fmri_event_table.

Examples

et <- event_table(
  data.frame(event_id = c("e1", "e2"), onset = c(0, 10), duration = c(2, 2)),
  key = "event_id"
)
event_data(et)
#> # A tibble: 2 × 3
#>   event_id onset duration
#>   <chr>    <dbl>    <dbl>
#> 1 e1           0        2
#> 2 e2          10        2
event_key(et)
#> [1] "event_id"