Description Usage Arguments Details Author(s) See Also Examples

Given a square matrix giving the results of pairwise comparisons, return a board object whose rows show the results of the comparisons.

1 | ```
as.pairwise(x)
``` |

`x` |
A square matrix |

With `x`

an *n*-by-*n* square matrix, the rows and
columns each correspond to one of *n* “competitors”. The
*(i,j)*-th entry the number of times competitor *i* beats
competitor *j* (the leading diagonal holds `NA`

s because a
competitor can't play himself).

Function `as.pairwise()`

turns this into a
*n(n-1)/2*-by-*n* matrix whose rows each correspond to a
pairwise comparison. Any row has exactly two non-`NA`

entries,
in columns *i* and *j*, that correspond to elements
*(i,j)* and *(j,i)* of `x`

. Thus the entry in column
*i* is the number of times competitor *i* beats competitor
*j*; and the entry in column *j* is the number of times
competitor *j* beats competitor *i*.

Robin K. S. Hankin

1 2 3 4 |

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