metadata
(filename), data (a list containing longitude and
latitude) and processingLog.gps[["longitude"]] or gps[["latitude"]]. Items in
metadata must be specifield by full name, but those in
data may be abbreviated, so long as the abbreviation is unique.} gps[["longitude"]] <- value, and of course the same can be done
for latitude.}
show method (e.g.
show(gps)) displays information about the object.}
as.gps to convert data to this form,
read.gps to read GPX-format data, and plot.gps
to plot data.