coi is a small library can extract three metrics relevant for physical tree-tree interactions from point clouds representing trees. Namely the crown overlap index (COI), which gives the package its Name and is described in Täuber et al. (in prep.) The crown complementarity index (CCI) as described in Williams et al. (2017). And the box dimension structural complexity as described in Seidel (2018).
Installation
You can install coi by running:
# install.packages("devtools")
devtools::install_github("ataeub/coi")Usage
For an intro to the usage of the library please refer to this vignette. For a more thorough explanation of the underlying algorithms you can refer to the paper Täuber et al. (2026) in prep.