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oce (version 0.9-18)

as.gps: Coerce data into a GPS dataset

Description

Coerces a sequence of longitudes and latitudes into a GPS dataset.

Usage

as.gps(longitude, latitude, filename="")

Arguments

longitude
the longitude in decimal degrees, positive east of Greenwich, or a data frame with columns named latitude and longitude, in which case these values are extracted from the data frame and the second argument is ig
latitude
the latitude in decimal degrees, positive north of the Equator.
filename
name of file containing data (if applicable).

Value

Details

This may be used when read.gps cannot read a file, or when the data have been manipulated.

References

The GPX format is described at http://www.topografix.com/GPX/1/1/.

See Also

The documentation for gps-class explains the structure of gps objects, and also outlines the other functions dealing with them.