select_times: Select timerange

In craddm/eegUtils: Utilities for Electroencephalographic (EEG) Analysis

Select timerange

Description

Generic function for selecting specific time ranges from a given dataset. Input can be a dataframe, or an object of class eeg_data, eeg_epochs, or eeg_evoked. Note this finds the closest times to those specified, so the time range returned may be slightly longer or shorter than that requested.

Usage

select_times(data, ...)

## Default S3 method:
select_times(data, time_lim = NULL, ...)

## S3 method for class 'eeg_data'
select_times(data, time_lim = NULL, df_out = FALSE, ...)

## S3 method for class 'eeg_epochs'
select_times(data, time_lim, df_out = FALSE, ...)

## S3 method for class 'eeg_evoked'
select_times(data, time_lim, df_out = FALSE, ...)

## S3 method for class 'eeg_tfr'
select_times(data, time_lim = NULL, df_out = FALSE, ...)

Arguments

data	Data from which to select
...	Further arguments passed to or from other methods.
time_lim	A character vector of two numbers indicating the time range to be selected e.g. c(min, max), or a list to select specific times.
df_out	Returns a data frame rather than an object of the same type that was passed in.

Value

Data frame with only data from within the specified range.

eeg_data object

Methods (by class)

• select_times(default): Default select times function

• select_times(eeg_data): Select times from an eeg_data object

• select_times(eeg_epochs): Select times in eeg_epochs objects

• select_times(eeg_evoked): Select times in eeg_evoked objects

• select_times(eeg_tfr): Select times from an eeg_tfr object

Author(s)

Matt Craddock, [e-mail]

See Also

select_elecs() and select_epochs()

Other Data selection functions: select_elecs()

Examples

## Select timepoints from -.1 to .3
demo_epochs
short_epochs <- select_times(demo_epochs, time_lim = c(-.1, .3))
short_epochs
short_epochs <- select_times(demo_epochs, time_lim = list(-.1, .15, .3))
head(short_epochs$timings)

craddm/eegUtils documentation built on March 1, 2025, 3:23 p.m.