Build Plackett-Luce rankings from tricot ranking dataset

Create an object of class "rankings" from tricot ranking data.

rank_tricot2(data, id, items, input, ...)

Arguments

data

a data.frame with columns specified by items and input values

id

an index of data indicating the id column

items

a character or numerical vector for indexing the column(s) containing the item names in data

input

a character or numerical vector for indexing the column(s) containing the values in data to be ranked

...

additional arguments passed to methods. See details

Value

a PlackettLuce "rankings" object, which is a matrix of dense rankings

References

van Etten J., et al. (2016). Experimental Agriculture, 55(S1), 275–296. doi:10.1017/S0014479716000739

See also

rankings, nicabean

Other rank functions: rank_numeric(), rank_tricot(), set_binomialfreq(), set_paircomp()

Author

Kauê de Sousa and Jacob van Etten, with ideas from Heather Turner

Examples

library("gosset")

R = nicabean$trial

R = R[R$trait == "Vigor", ]

names(R)

R = rank_tricot2(R, id = "id", items = "item", input = "rank")