pdi - Phenotypic Index Measures for Oak Decline Severity
Oak declines are complex disease syndromes and consist of
many visual indicators that include aspects of tree size, crown
condition and trunk condition. This can cause difficulty in the
manual classification of symptomatic and non-symptomatic trees
from what is in reality a broad spectrum of oak tree health
condition. Two phenotypic oak decline indexes have been
developed to quantitatively describe and differentiate oak
decline syndromes in Quercus robur. This package provides a
toolkit to generate these decline indexes from phenotypic
descriptors using the machine learning algorithm random forest.
The methodology for generating these indexes is outlined in
Finch et al. (2121) <doi:10.1016/j.foreco.2021.118948>.