Coerces a sequence of longitudes and latitudes into a GPS dataset.
This may be used when read.gps() cannot read a file, or when the
data have been manipulated.
Arguments
- longitude
the longitude in decimal degrees, positive east of Greenwich, or a data frame with columns named
latitudeandlongitude, in which case these values are extracted from the data frame and the second argument is ignored.- latitude
the latitude in decimal degrees, positive north of the Equator.
- filename
name of file containing data (if applicable).
Value
A gps object.
See also
Other things related to gps data:
[[,gps-method,
[[<-,gps-method,
gps-class,
plot,gps-method,
read.gps(),
summary,gps-method