as.coastline {oce}R Documentation

Coerce data into coastline dataset

Description

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

Usage

as.coastline(longitude, latitude, fillable)

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 ignored.

latitude

the latitude in decimal degrees, positive north of the Equator.

fillable

boolean indicating whether the coastline can be drawn as a filled polygon.

Details

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

Value

An object of class "coastline" (for details, see read.coastline).

Author(s)

Dan Kelley

References

The NOAA site http://www.ngdc.noaa.gov/mgg/shorelines/shorelines.html is a good source for coastline data files.

See Also

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


[Package oce version 0.9-18 Index]