qs2: Power of interactive determinant for multiple explanatory...
In IDSA: An Interactive Detector for Spatial Associations

Description Usage Arguments Value Examples

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

1	qs2(y, x, xoverlay, location)

`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

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

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")])