View source: R/DistanceFromRank.R
DistanceFromRank | R Documentation |
DistanceFromRank
:
Creates a 3-dimensional distance array from the results
of a ranking task.DistanceFromRank
:
Takes the results from a (plain) ranking task
where K assessors rank (with possible ties)
I observations on
one dimension and transform it into a brick of data
to be used by distatis
.
DistanceFromRank(X)
X |
gives the results of a ranking task (see example below) as an objects (rows) by assessors (columns) matrix. |
DistanceFromRank
creates an
I*I*K
array of distance
in which each of the K "slices"
stores the (squared Euclidean ranking)
distance matrix of the kth assessor.
In one of
these distance matrices, the distance
between two objects is computed
from he Pythagorean theorem.
The ouput ot the function DistanceFromRank
is used as input for the
function distatis
.
The input should have assessors as columns and observations as rows (see example below).
DistanceFromRank
returns an
I*I*K
array of distance.
Herve Abdi
distatis
DistanceFromSort
# Use the data set WinesRankingRawData stored in an excel file. path2file <- system.file("extdata", "WinesRankingRawData.xlsx", package = 'DistatisR') ranking6Wines <- read.df.excel(path = path2file, sheet = 'Ranking') aCubeOfDistance <- DistanceFromRank(ranking6Wines$df.data)
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