ggplot.npsurv: Title Plot npsurv Nonparametric Survival Curves Using ggplot2

In rms: Regression Modeling Strategies

Title Plot npsurv Nonparametric Survival Curves Using ggplot2

Description

Title Plot npsurv Nonparametric Survival Curves Using ggplot2

Usage

## S3 method for class 'npsurv'
ggplot(
  data,
  mapping,
  conf = c("bands", "none"),
  trans = c("identity", "logit", "probit", "loglog"),
  logt = FALSE,
  curtail = c(0, 1),
  xlab,
  ylab = "Survival Probability",
  abbrev.label = FALSE,
  levels.only = TRUE,
  alpha = 0.15,
  facet = FALSE,
  npretty = 10,
  onlydata = FALSE,
  ...,
  environment
)

Arguments

data	the result of npsurv
mapping	unused
conf	set to "none" to suppress confidence bands
trans	the name of a transformation for the survival probabilities to use in drawing the y-axis scale. The default is no transformation, and other choices are ⁠"logit", "probit", "loglog"⁠. "loglog" represents -log(-log(S(t)))
logt	set to TRUE to use a log scale for the x-axis
curtail	set to a (lower, upper) 2-vector to curtail survival probabilities and confidence limits before transforming and plotting
xlab	x-axis label, the default coming from fit
ylab	y-axis label, the default coming from fit
abbrev.label	set to TRUE to abbreviate strata levels
levels.only	set to FALSE to keep the original strata name in the levels
alpha	transparency for confidence bands
facet	when strata are present, set to TRUE to facet them rather than using colors on one panel
npretty	the number of major tick mark labels to be constructed by scales::breaks_pretty() or pretty(). For transformed scales, twice this number is used.
onlydata	set to TRUE to return the data frame to be plotted, and no plot
...	ignored
environment	unused

Value

a ggplot2 object, if onlydata=FALSE

Author(s)

Frank Harrell

Examples

set.seed(1)
g <- c(rep('a', 500), rep('b', 500))
y <- exp(-1 + 2 * (g == 'b') + rlogis(1000) / 3)
f <- npsurv(Surv(y) ~ g)
ggplot(f, trans='logit', logt=TRUE)

rms documentation built on April 12, 2025, 1:18 a.m.