R: Coordinate representation of CoDa tables

coord {robCompositions} | R Documentation

## Coordinate representation of CoDa tables

### Description

General approach to orthonormal coordinates for compositional tables

### Usage

    coord(x, SBPr, SBPc)

    ## S3 method for class 'coord'
    print(x, ...)

### Arguments

`x` | an object of class “table”, “data.frame” or “matrix”
`SBPr` | sequential binary partition for rows
`SBPc` | sequential binary partition for columns
`...` | further arguments passed to the print function

### Details

A contingency or propability table is by definition a compositional data set. This approach consider the related special properties of compositional tables. It constructs orthonomal coordinates for compositional tables using the isometric log-ratio approach for given sequential binary partitions on rows and columns.

### Value

Row and column balances, odds ratios, particularly

`row_balances` | row balances
`row_bin` | binary partition for rows
`col_balances` | column balances
`col_bin` | binary parition for columns
`odds_ratios_coord` | odds ratio coordinates

### Author(s)

Kamila Facevicova, and minor adaption by Matthias Templ

### References

Kamila Facevicova, Karel Hron, Valentin Todorov, Matthias Templ (201x) General approach to coordinate representation of compositional tables. Submitted to JRSS B.

### Examples

    x <- rbind(c(1,5,3,6,8,4),c(6,4,9,5,8,12),c(15,2,68,42,11,6),
               c(20,15,4,6,23,8),c(11,20,35,26,44,8))
    x
    SBPc <- rbind(c(1,1,1,1,-1,-1),c(1,-1,-1,-1,0,0),c(0,1,1,-1,0,0),
                  c(0,1,-1,0,0,0),c(0,0,0,0,1,-1))
    SBPc
    SBPr <- rbind(c(1,1,1,-1,-1),c(1,1,-1,0,0),c(1,-1,0,0,0),c(0,0,0,1,-1))
    SBPr
    result <- coord(x, SBPr,SBPc)
    result
    data(socExp)

[Package robCompositions version 2.0.9 Index]