TT.mahalanobis: Calculates the Mahalanobis distance between clay silt and...
In soiltexture: Functions for Soil Texture Plot, Classification and Transformation

TT.mahalanobis

R Documentation

Calculates the Mahalanobis distance between clay silt and sand.

Description

Function that calculated the Mahalanobis distance between clay silt and sand, on a regular x-y grid (back-transformed to Clay silt and sand for Mahalanobis calculation). The underlying function is mahalanobis() by R Development Core Team (2009)

Usage

TT.mahalanobis(
  geo,
  tri.data,
  css.names = NULL,
  text.tol = NULL,
  text.sum = NULL,
  blr.clock = NULL,
  tri.sum.tst = NULL,
  tri.pos.tst = NULL,
  set.par = FALSE,
  n = 25,
  center = NULL,
  cov.mat = NULL,
  inverted = FALSE,
  ...,
  alr = FALSE,
  divisorvar = 2
)

Arguments

`geo`	See `TT.plot`
`tri.data`	See `TT.plot`
`css.names`	See `TT.plot`
`text.tol`	See `TT.plot`
`text.sum`	See `TT.plot`
`blr.clock`	See `TT.plot`
`tri.sum.tst`	See `TT.plot`
`tri.pos.tst`	See `TT.plot`
`set.par`	If TRUE parameters are set automatically to their defualt value
`n`	Number of points in the grid.
`center`	Passed to `mahalanobis`
`cov.mat`	Passed to `mahalanobis`
`inverted`	Passed to `mahalanobis`
`...`	More argument passed to `mahalanobis`
`alr`	If TRUE an additive log-ratio transformation of the data is performed, and the Mahalanobis distance is computed on all classes but css.names[divisorvar]
`divisorvar`	The Mahalanobis distance will be computed on all the texture class but css.names[divisorvar]

Author(s)

Julien Moeys [aut, cre], Wei Shangguan [ctb], Rainer Petzold [ctb], Budiman Minasny [ctb], Bogdan Rosca [ctb], Nic Jelinski [ctb], Wiktor Zelazny [ctb], Rodolfo Marcondes Silva Souza [ctb], Jose Lucas Safanelli [ctb], Alexandre ten Caten [ctb]

soiltexture documentation built on May 29, 2024, 7:53 a.m.