crown_evenness_qsm: Crown evenness TreeQSM

In lmterryn/ITSMe: Individual Tree Structural Metrics

Crown evenness TreeQSM

Description

Calculates the crown evenness from a TreeQSM.

Usage

crown_evenness_qsm(cylinder)

Arguments

cylinder

Cylinder field of a TreeQSM that is returned by read_tree_qsm.

Details

The crown evenness is defined as "The crown cylinders divided into 8 angular bins. Ratio between the minimum heights of the highest and lowest bin." (Akerblom et al., 2017 & Terryn et al., 2020). Crown cylinders are determined with crownset_qsm.

Value

The crown evenness.

References

Akerblom, M., Raumonen, P., Makipaa, R., & Kaasalainen, M. (2017). Automatic tree species recognition with quantitative structure models. Remote Sensing of Environment, 191, 1-12.

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

## Not run: 
# Read tree qsm and calculate the crown evenness
qsm <- read_tree_qsm(QSM_path = "path/to/qsm.mat")
ce <- crown_evenness_qsm(cylinder = qsm$cylinder)

## End(Not run)

lmterryn/ITSMe documentation built on Feb. 4, 2025, 2:21 a.m.