as.coastline {oce} | R Documentation |
Coerces a sequence of latitudes and longitudes into a coastline dataset.
as.coastline(latitude, longitude)
latitude |
the latitude in decimal degrees, positive north of the equator. |
longitude |
the longitude in decimal degrees, positive north of Greenwich. |
This may be used when read.coastline
cannot read a file, or when
the data have been manipulated.
An object of class
"coastline"
(for details, see read.coastline
).
Dan Kelley
The NOAA site http://www.ngdc.noaa.gov/mgg/shorelines/shorelines.html is a good source for coastline data files.
You may also use read.coastline
to read a coastline file.
Plotting is typically done with plot.coastline
, although
it is sufficient to just use plot
for coastline objects.
## Not run: d<-read.table("bbasin.dat",header=FALSE) # dataset not provided with oce HH <-c(1645:2105) # main outline of Halifax Harbour GI <-c(4866:4885) # George's Island coastline.hal <- as.coastline(latitude[c(HH,GI)],longitude[c(HH,GI)]-360) ## End(Not run)