tow.id: Extract Tow Identifier

In TobieSurette/gulf.data: Southern Gulf of St Lawrence Data Access

Extract Tow Identifier

Description

Functions to extract or determine trawl tow identifiers.

Usage

tow.id(x, ...)

## Default S3 method:
tow.id(x, ...)

## S3 method for class 'probe'
tow.id(x, method, ...)

## S3 method for class 'star.oddi'
tow.id(x, method, ...)

## S3 method for class 'minilog'
tow.id(x, method = "observed")

## S3 method for class 'scscat'
tow.id(x, ...)

## S3 method for class 'scsbio'
tow.id(x, ...)

## S3 method for class 'scslen'
tow.id(x, ...)

Arguments

x	Data object.
...	Not used.
method	Character string specifying the method to be used when determining the tow identification number for a probe object. Available methods are ‘time’ and ‘latlong’. Available options are ‘observed’, ‘file name’, ‘header’, and ‘time’.
max.distance	Numeric valiue specifying the maximum distance tolerance (in kilometers) when determining the tow identification number for a probe object from lat-lon coordinates.

Methods (by class)

• tow.id(default): Default ‘tow.id’ method.

• tow.id(probe): ‘tow.id’ ‘probe’ method.

• tow.id(star.oddi): ‘tow.id’ sQuotestar.oddi method.

• tow.id(minilog): ‘tow.id’ ‘minilog’ method.

• tow.id(scscat): ‘tow.id’ ‘scscat’ method.

• tow.id(scsbio): ‘tow.id’ ‘scsbio’ method.

• tow.id(scslen): ‘tow.id’ ‘scslen’ method.

Examples

files <- locate.minilog(2018)
tow.id(read.minilog(files[200]))          

TobieSurette/gulf.data documentation built on Jan. 19, 2025, 7:50 p.m.