rgr: gx.symm.coords – R documentation

Pricing

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

Get Started for Free

Documentation

rgr

gx.symm.coords

Computation of Symmetric Coordinates

Description

Computes symmetric coordinates for the first two columns of a n by p matrix of compositional data.

Usage

gx.symm.coords(x)

Arguments

`x`	matrix for which the symmetric coordinates for the first two columns will be computed.

Value

Z.av

the n by 2 matrix of symmetric coordinates.

Author(s)

Based on function pivotCoords from package robCompositions ver 2.0.3 by Templ, M., Hron, K. and Filzmoser, P.

References

Kynclova, P., Hron, K., and Filzmoser, P., 2017. Correlation Between Compositional Parts Based on Symmetric Balances. Mathematical Geosciences, 49:777-796.

Examples

## Make test data available
data(nockolds)

## Compute and display symmetric coordinates for the first two columns 
## of the data
gx.symm.coords(as.matrix(nockolds))

## Clean-up
rm(nockolds)

rgr

Applied Geochemistry EDA

v1.1.15

GPL-2

Authors

Robert G. Garrett

Initial release

2018-03-05