Extracts variables from the events
table of the eyelinkRecording
object.
Normally, you don't need to call this function yourself,
as it is called during the read_edf
with default settings
(e.g., import_variables = TRUE
).
Usage
extract_variables(object)
# S3 method for data.frame
extract_variables(object)
# S3 method for eyelinkRecording
extract_variables(object)
Arguments
- object
Either an
eyelinkRecording
object or data.frame with events, i.e.,events
slot of theeyelinkRecording
object.
Value
Object of the same time as input, i.e., either a eyelinkRecording
object
with an additional variables
slot or a data.frame with variables' information. See
eyelinkRecording
for details.
Examples
data(gaze)
# by passing the recording
gaze <- extract_variables(gaze)
# by passing events table
variables <- extract_variables(gaze$events)