geom_step {ggplot2}R Documentation

Connect observations by stairs.

Description

Connect observations by stairs.

Usage

geom_step(mapping = NULL, data = NULL, stat = "identity",
  position = "identity", direction = "hv", ...)

Arguments

mapping

The aesthetic mapping, usually constructed with aes or aes_string. Only needs to be set at the layer level if you are overriding the plot defaults.

data

A layer specific dataset - only needed if you want to override the plot defaults.

stat

The statistical transformation to use on the data for this layer.

position

The position adjustment to use for overlapping points on this layer

direction

direction of stairs: 'vh' for vertical then horizontal, or 'hv' for horizontal then vertical

...

other arguments passed on to layer. This can include aesthetics whose values you want to set, not map. See layer for more details.

Aesthetics

geom_step understands the following aesthetics (required aesthetics are in bold):

Examples

# Simple quantiles/ECDF from examples(plot)
x <- sort(rnorm(47))
qplot(seq_along(x), x, geom="step")

# Steps go horizontally, then vertically (default)
qplot(seq_along(x), x, geom="step", direction = "hv")
plot(x, type = "s")
# Steps go vertically, then horizontally
qplot(seq_along(x), x, geom="step", direction = "vh")
plot(x, type = "S")

# Also works with other aesthetics
df <- data.frame(
  x = sort(rnorm(50)),
  trt = sample(c("a", "b"), 50, rep = TRUE)
)
qplot(seq_along(x), x, data = df, geom="step", colour = trt)
[Package ggplot2 version 1.0.1 Index]