Ternary Error Bars

Description

geom_errorbarT, geom_errorbarL and geom_errorbarR are geometries to render error bars for the top, left and right apex species respectively, analogous to geom_errorbar and/or geom_errorbarh as provided in the base ggplot2 package.

Aesthetics (geom_errorbarT)

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

  • Tmax
  • Tmin
  • x
  • y
  • z
  • alpha
  • colour
  • linetype
  • size

Aesthetics (geom_errorbarL)

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

  • Lmax
  • Lmin
  • x
  • y
  • z
  • alpha
  • colour
  • linetype
  • size

Aesthetics (geom_errorbarR)

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

  • Rmax
  • Rmin
  • x
  • y
  • z
  • alpha
  • colour
  • linetype
  • size

Usage

geom_errorbarT(mapping = NULL, data = NULL, stat = "identity", position = "identity", ..., arrow = NULL, lineend = "butt", na.rm = FALSE, show.legend = NA, inherit.aes = TRUE)


geom_errorbarL(mapping = NULL, data = NULL, stat = "identity", position = "identity", arrow = NULL, lineend = "butt", na.rm = FALSE, show.legend = NA, inherit.aes = TRUE, ...)


geom_errorbarR(mapping = NULL, data = NULL, stat = "identity", position = "identity", arrow = NULL, lineend = "butt", na.rm = FALSE, show.legend = NA, inherit.aes = TRUE, ...)

Arguments

mapping
Set of aesthetic mappings created by aes or aes_. If specified and inherit.aes = TRUE (the default), it is combined with the default mapping at the top level of the plot. You must supply mapping if there is no plot mapping.
data
The data to be displayed in this layer. There are three options: If NULL, the default, the data is inherited from the plot data as specified in the call to ggplot. A data.frame, or other object, will override the plot data. All objects will be fortified to produce a data frame. See fortify for which variables will be created. A function will be called with a single argument, the plot data. The return value must be a data.frame., and will be used as the layer data.
stat
The statistical transformation to use on the data for this layer, as a string.
position
Position adjustment, either as a string, or the result of a call to a position adjustment function.
...
other arguments passed on to layer. These are often aesthetics, used to set an aesthetic to a fixed value, like color = "red" or size = 3. They may also be parameters to the paired geom/stat.
arrow
specification for arrow heads, as created by arrow().
lineend
Line end style (round, butt, square).
na.rm
If FALSE, the default, missing values are removed with a warning. If TRUE, missing values are silently removed.
show.legend
logical. Should this layer be included in the legends? NA, the default, includes if any aesthetics are mapped. FALSE never includes, and TRUE always includes.
inherit.aes
If FALSE, overrides the default aesthetics, rather than combining with them. This is most useful for helper functions that define both data and aesthetics and shouldn't inherit behaviour from the default plot specification, e.g. borders.

Examples

#Example with Dummy Data.
tmp <- data.frame(x=1/3,
y=1/3,
z=1/3,
Min=1/3-1/6,
Max=1/3+1/6)
ggtern(data=tmp,aes(x,y,z)) + 
  geom_point() + 
  geom_errorbarT(aes(Tmin=Min,Tmax=Max),colour='red')+
  geom_errorbarL(aes(Lmin=Min,Lmax=Max),colour='green')+
  geom_errorbarR(aes(Rmin=Min,Rmax=Max),colour='blue')