Description Usage Arguments Details Value Author(s) Examples

A set of deprecated functions that have replaced by `Yule2tetra`

and `Yule2phi`

.

Some older correlation matrices were reported as matrices of Phi or of Yule correlations. That is, correlations were found from the two by two table of counts:

a | b | |

c | d | |

Yule Q is (ad - bc)/(ad+bc).

With marginal frequencies of a+b, c+d, a+c, b+d.

Given a square matrix of such correlations, and the proportions for each variable that are in the a + b cells, it is possible to reconvert each correlation into a two by two table and then estimate the corresponding polychoric correlation (using John Fox's polychor function.

1 2 3 | ```
Yule2poly.matrix(x, v) #deprectated
phi2poly.matrix(x, v) #deprectated
Yule2phi.matrix(x, v) #deprectated
``` |

`x` |
a matrix of phi or Yule coefficients |

`v` |
A vector of marginal frequencies |

These functions call `Yule2poly`

, `Yule2phi`

or `phi2poly`

for each cell of the matrix. See those functions for more details. See `phi.demo`

for an example.

A matrix of correlations

William Revelle

1 2 3 4 5 6 7 | ```
#demo <- phi.demo()
#compare the phi (lower off diagonal and polychoric correlations (upper off diagonal)
#show the result from poly.mat
#round(demo$tetrachoric$rho,2)
#show the result from phi2poly
#tetrachorics above the diagonal, phi below the diagonal
#round(demo$phis,2)
``` |

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