plotsurv {spatsurv}

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,
  ...
)

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

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.