gpx: Create a GPX (GPS Exchange Format) output.

In s-u/snippets: Code snippets, mostly visualization-related

Create a GPX (GPS Exchange Format) output.

Description

gpx creates XML output in the GPX format (GPS Exchange Format) from latitude, longitude and time.

Usage

gpx(lat, lon, time, file = NULL)

Arguments

lat	latitude of the points
lon	longitude of the points
time	time of the points (optional)
file	destination - can be a character string naming the output file or a connection to use for output or NULL in which case the function return a character vector with teh output.

Details

The resulting output is in GPX format contining exactly one track with the specified values (NAs are currently not supported!). If the time value is present then the track entries will include a time nodes as well. No checking is done on time entries so the user must ensure that they are exactly of the form YYYY-MM-DD HH:MM:SS, assumed to be in UTC.

(Note that OSM requires time stamps to be present in uploaded tracks.)

Value

If file is NULL then the value is a character vector containing the lines of the GPX output.

Examples

lat <- c(40.779, 40.777)
lon <- c(-74.428,-74.418)
cat(gpx(lat, lon), sep='\n')
cat(gpx(lat, lon, Sys.time()), sep='\n')

s-u/snippets documentation built on June 29, 2022, 6:42 a.m.