psxy {gmt} | R Documentation |
Call GMT to add lines/symbols to a map and save in postscript format.
psxy(x, cmd="-J -R -Scp -W2p -O -K", file=getOption("gmt.file"))
x |
data frame, matrix, or filename containing the data to be plotted. |
cmd |
string of arguments passed to psxy . |
file |
filename where the map is saved. |
The data are arranged in two (Lon, Lat) or more columns, depending on
the -S
argument.
If x
is a filename, the data should be tabular with or without
a header, separated by commas or whitespace. The first line is
interpreted as header if the first non-whitespace character is not
minus, point, or number.
See the GMT documentation for details on psxy
and
other GMT commands.
Null, but the map is annotated and saved in postscript format.
The temporary GMT input file ‘xy.gmt’ is saved in
directory dirname(tempdir())
, for the user to view or edit. It
is later removed by psclose()
.
Arni Magnusson arnima@u.washington.edu.
Similar to points
, lines
, and
postscript
in native R graphics.
gmt
, pscoast
, psxy
,
pstext
, psbar
, and psclose
work together to draw maps.
gmt-package
gives an overview of the package.
## Not run: # Draw map and save as "map.eps" in current working directory gmt(demo.par) pscoast(demo.coast) psxy(demo.xy) pstext(demo.text) psbar(demo.bar, ref=66) psclose() # See directory gmt/example for details ## End(Not run)