oce (version 0.1.69)

plot.TS: Plot temperature-salinity diagram for seawater (CTD) data

Description

Plot temperature-salinity diagram for seawater (CTD) data.

Usage

plot.TS(x,
	rho.levels = 6,
	grid = FALSE,
	col.grid = "lightgray",
	rho1000 = FALSE,
	col = par("col"),
	col.rho = "darkgray",
	cex.rho = 0.9*par("cex"),
	cex = par("cex"),
	pch = 20,
	rotate.rho.labels = FALSE,
	connect.points = FALSE,
	...)

Arguments

x

A cdt object, e.g. as read by read.ctd.

rho.levels

Either a list of density levels for which to draw isopycnal lines, or a suggestion for the number of levels. In the latter case, pretty() is used to select levels.

grid

a flag that can be set to TRUE to get a grid.

col.grid

color of grid.

rho1000

if TRUE, label isopycnals as e.g. 1024; if FALSE, label as e.g. 24

col

colour for symbols.

col.rho

colour for isopycnal lines.

cex.rho

size of isopycnal labels.

cex

size of symbols on graph.

pch

code for symbols on graph.

rotate.rho.labels

if TRUE, labels in right-hand margin are written vertically

connect.points

if TRUE, the points are connected with line segments, in sequence

...

optional arguments passed to plotting functions.

Value

• None.

Details

Creates a temperature-salinity plot for a CTD cast, with labeled isopycnals.

See Also

summary.ctd summarizes the information, while read.ctd scans it from a file.

Examples

library(oce)
profile <- read.ctd("/usr/local/lib/R/library/oce/demo/ctdprofile.cnv")
attach(profile)
plot.TS(profile)
# North Atlantic thermocline water, mixing to Antarctic Intermediate Water
# (after Defant's analysis)
N <- 10
Srange <- c(34.15, 35.94)
Trange <- c(3.3,18)
SS <- Srange[1] + (Srange[2] - Srange[1]) *(1:N)/(N-1) + 0.01*rnorm(N)
TT <- Trange[1] + (Trange[2] - Trange[1]) *(1:N)/(N-1) + 0.01*rnorm(N)
plot.TS(as.ctd(S=SS, T=TT, p=0))