vms_calculate_speed: Calculates speed between pings

Description Usage Arguments Value

Description

The function calculates the speed between consequtive pings for each vessel. If either a variable distance or duration or both is not available it gets calculated from the data.

Usage

1

Arguments

d

A standardize vms dataframe

Value

A dataframe with a new variable speed (in units of nautical miles per hour)


fishvice/ghsllr documentation built on May 24, 2019, 1:36 a.m.