R (>= 3.2.0), Formula (>= 1.2-3), plotrix, TeachingDemos
R (>= 3.4.0), Formula (>= 1.2-3), plotrix, TeachingDemos
earth (>= 4.2.0), MASS, neuralnet, rpart, rpart.plot
earth (>= 4.3.0), MASS, neuralnet, rpart, rpart.plot