Branch angle ratio TreeQSM — branch_angle_ratio

Calculates the branch angle ratio from a TreeQSM.

Usage

branch_angle_ratio_qsm(branch)

Arguments

branch: Branch field of a TreeQSM that is returned by read_tree_qsm.

Value

The branch angle ratio. NaN when there are no branches.

Details

The branch angle ratio is defined as "Ratio of the medians of the branching angles of the 1st order branches and 2nd order branches" (Terryn et al., 2020).

References

Terryn, L., Calders, K., Disney, M., Origo, N., Malhi, Y., Newnham, G., ... & Verbeeck, H. (2020). Tree species classification using structural features derived from terrestrial laser scanning. ISPRS Journal of Photogrammetry and Remote Sensing, 168, 170-181.

Examples

if (FALSE) {
# Read tree qsm and calculate the branch angle ratio
qsm <- read_tree_qsm(QSM_path = "path/to/qsm.mat")
br <- branch_angle_ratio_qsm(branch = qsm$branch)
}