qs2 {IDSA}

Power of interactive determinant for multiple explanatory variables in IDSA model.

Description

Power of interactive determinant for multiple explanatory variables in IDSA model.

Usage

qs2(y, x, xoverlay, location)

Arguments

y

A numeric vector of a response variable

x

A numeric vector of a explanatory variable

xoverlay

A character variable of an explanatory variable

location

A matrix of spatial locations

Value

A power of interactive determinant (PID) value from IDSA model.

Examples

library(GD)
data <- sim[,4:6]
data.disc <- apply(data, 2, FUN = function(x) disc(x, 4, "quantile"))
layers <- do.call(cbind, lapply(1:ncol(data), function(x)
  data.frame(cut(data[, x], data.disc[[x]]$itv, include.lowest = TRUE))))
names(layers) <- names(data)
fo <- fuzzyoverlay(y = sim[,1], layers = layers, method = "fuzzyAND")
q.idsa <- qs2(y = sim$y, x = data, xoverlay = fo$fuzzylayer,
              location = sim[, c("lo","la")])