The Wide Dynamic Range Vegetation Index and its Potential Utility for Gap Analysis

StatMod provides an easy-to-use and inexpensive tool for spatially applying the classification rules generated from the CT algorithm in S-PLUS. While the focus of this article was to use StatMod for classification trees, StatMod functions in a similar manner for regression trees. Classification trees are appropriate for discriminating distinct classes such as land cover. In a regression tree, the response variable is a continuous numeric field such as percent canopy cover. In addition to interfacing with S-PLUS for classification and regression trees, StatMod can be used to interface with SAS® to create and spatially apply logistic regression models.