Package index • narwcr

Reading the database

Reading a NARWC extract and putting it into one predictable shape, reconciling the column names different survey programmes use for the same thing.

narwc_cloud_roots(): Where OneDrive and Google Drive sync to
narwc_codes(): NARWC database code books
narwc_column_mapping(): What the column names were changed to
narwc_fetch(): Fetch a survey file from cloud storage
narwc_profiles(): Survey-programme column profiles
narwc_schema(): NARWC columns recognised by narwcr
read_narwc(): Read NARWC-format survey data
standardize_narwc_columns(): Standardise column names onto the NARWC handbook's

Filling and validating

Checks that report rather than stop, and the fills that are safe to apply. Some columns must never be carried forward; narwc_never_fill() says which.

fill_legstage(): Reconstruct the line state on records that record no LEGSTAGE
fill_narwc(): Carry survey state forward into blank rows
narwc_checks(): The handbook-general check set
narwc_fill_columns() narwc_never_fill(): Columns that may be carried forward, and columns that must not be
narwc_finding(): Record one validation finding
narwc_strip_bins(): NARWC STRIP right-angle distance code books
validate_narwc(): Check survey data against the NARWC handbook

Effort and platform

Deriving what the survey was doing from what it recorded: on or off effort, from which platform, at what speed, and whether conditions allowed a sighting.

angles_from_declination(): Build ANGLEL and ANGLER from one declination column and a side
classify_platform(): Label each record's platform from how fast it was moving
flag_effort(): Flag on-effort records
make_leg_id(): Identify separate occupations of a survey line
on_effort_census_rows(): Which records are eligible for a right-angle distance?
track_speed(): Speed implied by consecutive position fixes
visibility_ok(): Was visibility acceptable?

Looking at it

An interactive map of an extract: sightings, effort and acoustic stations over a chosen time period, with the effort criteria as controls rather than as constants.

run_narwc_app(): Look at a NARWC extract on a map