Distance matrix for qd_pci2

Calculates distance matrix for the function qd_pci2

qd_pci2_D(x, m = 1, p = 1)

Arguments

x

vector with the scores of the respondents

m

m value in the formula (see details)

p

power value in the formula (see details)

Value

single value containing pci index

Details

$$Dp_{x,y} = (|r_{x} - r_{y}|) - (m-1))^{p}$$ $$if sign(r_{x} \neq r_{y}) \\ else d_{x,y} = 0$$ Dp_x,y = (|r_x - r_y| - (m-1))^p

See also

Other plotting: qd_pci1(), qd_pci2()

Examples

if (FALSE) { # \dontrun{
#'set.seed(201)
Xv <- sample(-2:2, size = 100, replace = TRUE) #random responses
qd_pci2(Xv, scale_values = -2:2, x_is_table = FALSE, m = 1, p = 1) # 0.37
} # }