plotsurv: plotsurv function

Description

A function to produce a 2-D plot of right censored spatial survival data.

Usage

plotsurv(
  spp,
  ss,
  maxcex = 1,
  transform = identity,
  background = NULL,
  eventpt = 19,
  eventcol = "red",
  censpt = "+",
  censcol = "black",
  xlim = NULL,
  ylim = NULL,
  xlab = NULL,
  ylab = NULL,
  add = FALSE,
  ...
)

Value

Plots the survival data non-censored observations appear as dots and censored observations as crosses. The size of the dot is proportional to the observed time.

Arguments

spp: A spatial points data frame
ss: A Surv object (with right-censoring)
maxcex: maximum size of dots default is equavalent to setting cex equal to 1
transform: optional transformation to apply to the data, a function, for example 'sqrt'
background: a background object to plot default is null, which gives a blamk background note that if non-null, the parameters xlim and ylim will be derived from this object.
eventpt: The type of point to illustrate events, default is 19 (see ?pch)
eventcol: the colour of events, default is black
censpt: The type of point to illustrate events, default is "+" (see ?pch)
censcol: the colour of censored observations, default is red
xlim: optional x-limits of plot, default is to choose this automatically
ylim: optional y-limits of plot, default is to choose this automatically
xlab: label for x-axis
ylab: label for y-axis
add: logical, whether to add the survival plot on top of an existing plot, default is FALSE, which produces a plot in a new device
...: other arguments to pass to plot