oce.contour {oce} | R Documentation |
This provides something analagous to contour
, but with the
ability to flip x and y.
Setting revy=TRUE
can be helpful if the y
data represent
pressure or depth below the surface.
oce.contour(x, y, z, revx = FALSE, revy = FALSE, add = FALSE, tformat, drawTimeRange = getOption("oceDrawTimeRange"), debug = getOption("oceDebug"), ...)
x |
values for x grid. |
y |
values for y grid. |
z |
matrix for values to be contoured. The first dimension of |
revx |
set to |
revy |
set to |
add |
logical value indicating whether the contours should be added to a pre-existing plot. |
tformat |
time format; if not supplied, a reasonable choice will be
made by |
drawTimeRange |
logical, only used if the |
debug |
a flag that turns on debugging; set to 1 to information about the processing. |
... |
optional arguments passed to plotting functions. |
Dan Kelley
library(oce) data(topoWorld) ## coastline now, and in last glacial maximum lon <- topoWorld[["longitude"]] lat <- topoWorld[["latitude"]] z <- topoWorld[["z"]] oce.contour(lon, lat, z, levels=0, drawlabels=FALSE) oce.contour(lon, lat, z, levels=-130, drawlabels=FALSE, col='blue', add=TRUE)