nmea_date_time: NMEA utility functions

In paleolimbot/nmea: Parse 'NMEA' Sentences

Description

Some values like datetime, longitude, and latitude, are distributed accross fields.

Usage

nmea_date_time(date, time)

nmea_longitude(degree_spec, hemisphere)

nmea_latitude(degree_spec, hemisphere)

Arguments

date	A Date object or NMEA datestamp (DDMMYY)
time	A hms object or NMEA time (HHMMSS)
degree_spec	A longitude/latitude as it appears in the NMEA sentence (e.g., "4916.45"). This is in the form (dddmm.mm) where there are always two minutes digits to the left of the decimal point.
hemisphere	One of "S", "N", "W", or "E".

Value

• nmea_date_time: A POSIXct datetime (UTC)

• nmea_longitude and nmea_latitude: A numeric longitude/latitude

Examples

nmea_date_time("191194", "225446")
nmea_longitude("12311.12", "W")
nmea_latitude("4916.45", "N")

paleolimbot/nmea documentation built on April 12, 2021, 2:10 a.m.