ais2segments: Read ais.txt data from URL path and return spatial data.frame

In mvisalli/shipr: ships for whales functions

Description

Read ais.txt data from URL path and return spatial data.frame

Usage

ais2segments(data = NULL)

Arguments

data	AIS dataframe from urls2df function

Value

sf data.frame with segments/linestrings with distance (km), calculated speed, and reported speed

Examples

create segments from dataframe (data=df)
 segs=ais2segments(data = df)
Empty files returns empty df with date, filename, and timestamp and empty dataframes returns NULL
segs_empty = ais2segments(data = df_empty_url)

mvisalli/shipr documentation built on Aug. 8, 2020, 8:38 p.m.