Obtain the points where the coordinate profile extrema functions cross the threshold
getChangePoints(threshold, Design = NULL, allRes)if not null plots the level
a d dimensional design corresponding to the points
list containing the list res which contains the computed minima and maxima. The object returned by the function getAllMaxMin.
returns a list containing two lists with d components where
alwaysEx: each component is a numerical vector indicating the points \(x_i\) where \(inf_{x^{-i}}f(x) >\) threshold;
neverEx: each component is a numerical vector indicating the points \(x_i\) where \(sup_{x^{-i}}f(x) <\) threshold.