# Sleep Data Filtering and Visualisation

## Documentation for package ‘nocturn’ version 1.2.0

- DESCRIPTION file.
- Package NEWS.

## Help Pages

check_suggests | Check whether suggested packages are installed
chronotype | Calculate the Chronotype
circ_time_diff | Compute the signed time difference from t1 to t2
clean_epochs | Clean epoch data
clean_sessions | Clean session data
composite_phase_deviation | Calculate Composite Phase Deviation (CPD)
example_epochs | Example Epoch data
example_epochs_v1 | Example Epoch data (Somnofy API v1)
example_sessions | Example Sessions data
example_sessions_v1 | Example Sessions data (Somnofy API v1)
filter_by_age_range | Filter sessions by age range
filter_by_night_range | Filter sessions for nights within a night range
filter_by_sex | Filter by sex
filter_epochs_from_sessions | Filter epochs based on session IDs
get_col | Get a column from a dataframe safely
get_colnames | Get standard column names for a data frame (sessions or epochs)
get_epochs_summary | Summarise epoch information
get_epoch_colnames | Get a list of standard column names for epochs data
get_non_complying_sessions | Get non-complying sessions (i.e. where there is more than one session on the same day)
get_removed_sessions | Get a table of sessions that were removed during filtering
get_sessions_summary | Make a summary of session information
get_session_colnames | Get a list of standard column names for sessions data
get_time_per_day | Calculate the number of time units in a day
group_epochs_by_night | Create a grouping by night for epoch data
group_sessions_by_night | Create a grouping by night for session data
interdaily_stability | Calculate Interdaily Stability (IS)
is_iso8601_datetime | Check if a column contains ISO 8601 datetime strings
keep_longest | Remove duplicate sessions by keeping only the longest
load_batch | Load session or epoch data in batch mode
load_epochs | Load epoch data
load_sessions | Load session data
max_time | Calculate the maximum time from 12pm to 12pm
mean_time | Calculate the mean time from a vector of time strings
min_time | Calculate the minimum time from 12pm to 12pm
nocturn | nocturn app
parse_date | Parse a vector of date strings into Date objects
parse_time | Parse a vector of time strings into POSIXct objects
plot_bedtimes_waketimes | Plot bedtimes and waketimes
plot_bland_altman | Create a Bland-Altman plot
plot_hypnogram | Plot Hypnogram
plot_sleep_bubbles | Plot Sleep Bubbles
plot_sleep_clock | Plot Sleep Clock
plot_sleep_spiral | Plot Sleep Spiral
plot_timeseries | Plot epoch time series data for a given variable
plot_timeseries_comparison | Plot a timeseries of variables from different session data
plot_timeseries_sessions | Plot session time series data for a given variable
read_edf_epochs | Read EDF Epochs
read_edf_sessions | Read EDF Sessions
remove_sessions_no_sleep | Remove sessions with no sleep
sd_time | Calculate the circular standard deviation of a vector of times
select_devices | Select devices by ID
select_subjects | Select subjects by ID
set_colnames | Set column names for a data frame (sessions or epochs)
set_data_type | Set the type attribute for a data frame
set_min_sleep_period | Set minimum sleep period
set_min_time_in_bed | Set minimum time in bed
set_session_sleep_onset_range | Set sleep onset time range
set_session_start_time_range | Set session start time range
shift_times_by_12h | Shift times to break at 12 pm
sleeptimes_boxplot | Plot boxplots for sleep onset, midsleep, and wakeup times
sleeptimes_density | Plot density curves for sleep onset, midsleep, and wakeup times with a dashed line showing the median
sleeptimes_histogram | Plot histograms for sleep onset, midsleep, and wakeup times
sleep_regularity_index | Calculate the Sleep Regularity Index (SRI)
sleep_report | Generate a patient sleep report in PDF format
social_jet_lag | Calculate Social Jet Lag
time_diff | Compute the forward time difference from t1 to t2 (wrapping at 24)
time_to_hours | Convert time vector to numeric hours
update_date | Update the date component of a POSIXct time object