geom_interpolate_tern: Ternary Interpolation

Description

This is the heavily requested geometry for interpolating between ternary values, results being rendered using contours on a ternary mesh.

Usage

geom_interpolate_tern(mapping = NULL, data = NULL,
  stat = "InterpolateTern", position = "identity", ..., lineend = "butt",
  linejoin = "round", linemitre = 1, na.rm = FALSE, show.legend = NA,
  inherit.aes = TRUE, method = "auto", formula = value ~ poly(x, y, degree
  = 1))
stat_interpolate_tern(mapping = NULL, data = NULL,
  geom = "interpolate_tern", position = "identity", ..., method = "auto",
  na.rm = FALSE, show.legend = NA, inherit.aes = TRUE, n = 80,
  formula = value ~ poly(x, y, degree = 1))
StatInterpolateTern

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

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.fra

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 g

lineend

Line end style (round, butt, square)

linejoin

Line join style (round, mitre, bevel)

linemitre

Line mitre limit (number greater than 1)

na.rm

If FALSE (the default), removes missing values with a warning. If TRUE silently removes missing values.

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.

method

smoothing method (function) to use, eg. lm, glm, gam, loess, rlm. For datasets with n < 1000 default is loess. For datasets with 1000 or more observations defaults to gam, see

formula

formula to use in smoothing function, eg. y ~ x, y ~ poly(x, 2), y ~ log(x)

geom

Use to override the default connection between geom_smooth and stat_smooth.

number of grid points in each direction

format

An object of class StatInterpolateTern (inherits from Stat, ggproto) of length 6.

Aesthetics

[results=rd,stage=build]{ggtern:::rd_aesthetics("geom", "InterpolateTern")} data(Feldspar) ggtern(Feldspar,aes(Ab,An,Or,value=T.C)) + stat_interpolate_tern(geom="polygon", formula=value~x+y, method=lm,n=100, breaks=seq(0,1000,by=100), aes(fill=..level..),expand=1) + geom_point() datasets