plot.jointdata function

Plot longitudinal data

Plot longitudinal data of an object of class jointdata, for a longitudinal variable. It is possible to plot all the subjects in the data set, or just a selected subset. See subset.jointdata.

## S3 method for class 'jointdata'
plot(x, Y.col, type, xlab, xlim = NULL, ylim = NULL, main = NA, pty, ...)

Arguments

• x: object of class jointdata.

• Y.col: column number, or column name, of longitudinal variable to be plotted. Defaults to Y.col = NA, plotting all longitudinal variables.

• type: the type of line to be plotted, see plot

  for further details.

• xlab: a title for the x-axis, see title.

• xlim, ylim: numeric vectors of length 2, giving the x and y coordinates ranges, see plot.window for further details.

• main: an overall title for the plot; see title.

• pty: a character specifying the type of plot region to be used, see par for details.

• ...: other graphical arguments; see plot.

Returns

A graphical device with a plot for longitudinal data.

Examples

data(heart.valve)
heart.surv <- UniqueVariables(heart.valve,
                              var.col = c("fuyrs", "status"),
                              id.col = "num")
heart.long <- heart.valve[, c(1, 4, 5, 7, 8, 9, 10, 11)]
heart.jd <- jointdata(longitudinal = heart.long, 
                      survival = heart.surv,
                      id.col = "num",
                      time.col = "time")
plot(heart.jd, Y.col = "grad", col = "grey")

See Also

lines and points.

Author(s)

Ines Sousa