ggtern: geom_Xisoprop – R documentation

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geom_Xisoprop

Fixed Value Isoproportion Lines

Description

Create fixed isoproportion lines for each of the ternary axes, geom_Xisoprop(...), (X = T, L, R) will draw an isoproportion line projecting from the T, L and R apex respectively.

Usage

geom_Tisoprop(mapping = NULL, data = NULL, ..., value, na.rm = FALSE,
  show.legend = NA)

geom_Lisoprop(mapping = NULL, data = NULL, ..., value, na.rm = FALSE,
  show.legend = NA)

geom_Risoprop(mapping = NULL, data = NULL, ..., value, na.rm = FALSE,
  show.legend = NA)

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. A `function` can be created from a `formula` (e.g. `~ head(.x, 10)`).
`...`	Other arguments passed on to `layer()`. These are often aesthetics, used to set an aesthetic to a fixed value, like `colour = "red"` or `size = 3`. They may also be parameters to the paired geom/stat.
`value,`	the isoproportion ratio to draw
`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. It can also be a named logical vector to finely select the aesthetics to display.

Aesthetics

geom_Tisopropunderstands the following aesthetics (required aesthetics are in bold):

value
alpha
arrow
colour
linetype
size

Author(s)

Nicholas Hamilton

Examples

data(Feldspar)
ggtern(data=Feldspar,aes(Ab,An,Or)) +
geom_Tisoprop(value=0.5) +
geom_Lisoprop(value=0.5) +
geom_Risoprop(value=0.5) +
geom_point()

ggtern

An Extension to 'ggplot2', for the Creation of Ternary Diagrams

v3.3.0

GPL-2 | file LICENSE

Authors

Nicholas Hamilton [aut, cre]

Initial release

2020-04-9